Analysis of Ukraine's Strategy to Isolate Crimea and the Shift to Asymmetric Pressure in the Russia-Ukraine War

Executive Summary

Executive Summary

To overcome its structural disadvantages on the ground, Ukraine has shifted its strategic focus to isolating Crimea. Through the SBU's 40-day pressure campaign, Ukraine has systematically targeted military airfields, energy infrastructure, and maritime logistics assets, successfully exerting significant pressure that has led the Russian occupation authorities to declare a state of emergency. This offensive is not only a purely military operation but also a political maneuver to secure leverage for bringing Russia to the negotiating table under realistic conditions. It marks a turning point in the war, transitioning from a focus on attrition-based ground warfare to asymmetric pressure centered on neutralizing strategic strongholds. However, Russia is unlikely to make significant concessions in its negotiating position in the short term. The most realistic outlook (55-60% probability) is a prolonged strategic stalemate. In this highly uncertain environment, businesses and policymakers should avoid over-reliance on any single scenario. Instead, they should pursue a phased response focused on strategic flexibility, encompassing immediate diversification of supply chains linked to Russia and Ukraine, preemptive positioning for participation in Ukraine's post-war reconstruction, and deepening cooperation within European defense industry networks.

Phase 1: Issue Situation Analysis

Analysis Report on Ukraine's Intensified Offensive in Crimea and the Russia-Ukraine War Situation

1. Background and Progress of the Issue

Crimea has served as a key strategic stronghold in the Russia-Ukraine war since its illegal annexation by Russia in 2014. Russia has utilized Crimea as the home base for its Black Sea Fleet and a logistical hub supporting the entire southern front. For Ukraine, this means Crimea is not merely a territorial issue but a crucial military point that determines the war's trajectory [7]. While Ukraine's direct strike capabilities against Crimea were limited in the early stages of the war, it has gradually acquired long- and medium-range strike capabilities through rapid advancements in drone technology and sustained military support from the West.

Starting in the latter half of 2024, Ukraine began to fully implement its strategy of isolating Crimea. Since May, the Ukrainian military has conducted operations targeting military airfields, energy infrastructure, and railway hubs like Dzhankoi, as well as bridges connecting Crimea to the mainland [12]. This reflects a strategic intent to systematically weaken Russia's logistical lines on the southern front. Amidst this trend, on June 22, Ukrainian special forces successfully struck the Razdolnoye railway bridge over the North Crimean Canal for the first time. This bridge was a critical logistics route used for transporting heavy military equipment and supplies for the Russian forces [13].

2. Current Situation (Latest Developments)

Ukraine is currently systematically conducting high-intensity pressure operations to regain the initiative in the war. On June 25, President Zelensky officially approved the Security Service of Ukraine's (SBU) 40-day pressure campaign plan against Russia, aiming to bring Russia to the negotiating table through long- and medium-range strikes [16]. As part of this operation, the SBU is concentrating its attacks on military airfields, air defense systems, and energy and oil infrastructure within Crimea. The SBU has designated Crimea as a "zone of constant losses" [3][11].

Examining the specific operational achievements, on June 24, a drone unit from the SBU's 'Alpha' special operations center struck infrastructure near the Kerch Strait and the Saky and Gvardeyskoye military airfields, destroying four aircraft hangars at Saky airfield [3][11]. On June 25, a large-scale night attack targeted energy and oil infrastructure and military facilities across Crimea, severely impacting the peninsula's power grid and leaving half of Crimea without electricity as of June 23 [15]. On June 26, the SBU struck the Russian logistics support vessels Volga and Vyatka docked at the port of Kerch, causing large fires onboard. The cargo-passenger ferry Petropavlovsk, which was 96% complete, was also hit [14].

As a cumulative effect of these offensives, the Russian-installed authorities in Crimea declared a regional state of emergency on June 26. Sergey Aksyonov, the Kremlin-appointed governor of Crimea, stated the emergency was declared to "resolve economic issues" [2][5], but this is interpreted as an official acknowledgment of a complex crisis situation involving fuel shortages, power outages, and logistical paralysis. The Russian Ministry of Defense claimed to have intercepted 660 Ukrainian drones in 13 regions overnight but made no mention of the extent of damage or casualties [4][6]. Meanwhile, Russia is reportedly redeploying air defense assets to protect Moscow and the Crimean Bridge [3], exposing vulnerabilities in Crimea's air defense network.

3. Key Actors and Their Positions/Interests

Ukraine (Zelensky Government and SBU)is pursuing multiple strategic objectives simultaneously through its offensive in Crimea. First, it aims to shift the battlefield balance in its favor by disrupting Russia's logistical lines on the southern front. Second, it seeks to weaken Moscow's will to continue the war by imposing tangible costs on Russia's mainland and occupied territories [10]. Third, it has a diplomatic objective of securing sustained support from the West by showcasing Ukraine's military capabilities and strategic initiative to the international community [1]. Given President Zelensky's explicit commitment to retaking Crimea [6], this offensive should be understood not merely as a tactical operation but as part of a long-term campaign toward the strategic goal of reclaiming Crimea.

Russia (Putin Government)considers Crimea its territory since the 2014 annexation, making its abandonment politically impossible. While Russia continues to exert pressure across the front lines under orders to sustain large-scale attacks on Ukraine, the intensifying Ukrainian offensive in Crimea necessitates the redeployment of defensive resources [3]. Although the Russian side's official response has consistently aimed to minimize or deny damage, the declaration of a state of emergency can be seen as an indirect admission of a real crisis situation [8].

Western Countries (USA, EU, NATO)are continuing their military and economic support for Ukraine while concurrently engaging in internal discussions about the conditions and timing of a peace settlement. As Ukraine's enhanced drone strike capabilities are a direct result of Western technology transfer and financial aid, the West is also an indirect actor in this offensive. Russian Foreign Minister Lavrov's statement that Russia is ready for new peace negotiations "at any time" [13] may be mere diplomatic rhetoric, but it reflects growing international pressure for negotiations.

South Koreahas stated its willingness to accept all North Korean soldiers captured in Ukraine if requested [13], indicating that South Korea is emerging as a stakeholder, not just an observer, in the Russia-Ukraine war. Given the confirmed deployment of North Korean soldiers to Russia, South Korea's response direction is a sensitive issue directly linked to the security dynamics of the Korean Peninsula.

4. Summary of Key Issues

There are four main issues currently highlighted in the Russia-Ukraine war.

First, the issue of the strategic effectiveness of the Crimean offensiveUkraine's drone offensive is systematically weakening Russia's logistical capabilities, but it remains uncertain whether this will be sufficient to break the structural stalemate on the front lines. The declaration of a state of emergency in Crimea demonstrates the offensive's impact while also suggesting that Russia is gaining time to adapt and reorganize its defense systems [2][8].

Second, the issue of conditions and timing for peace negotiationsUkraine's 40-day pressure campaign carries the character of coercive diplomacy aimed at bringing Russia to the negotiating table [1][16]. However, the gap remains significant between Russia's de facto surrender terms—Ukraine's neutrality and withdrawal of Ukrainian forces from eastern Donetsk—and Ukraine's position [1]. For negotiations to become possible, both sides must reach a point where they perceive the current military costs to exceed the benefits of negotiation, and the timing for this is difficult to predict.

Third, the strategic dilemma posed by Russia's redeployment of air defense assetsRussia's redeployment of air defense assets within Crimea to protect Moscow and the Crimean Bridge [3] implies that Ukraine's offensive is forcing Russia to disperse its limited defensive resources. This could lead to defensive gaps in other areas within Crimea, potentially creating opportunities for further Ukrainian strikes.

Fourth, the issue of North Korea's involvement and South Korea's roleThe issue of accepting North Korean POWs in South Korea highlights that this war is directly linked to the security dynamics of the Korean Peninsula [13]. If North Korea's support for Russia continues, the extent to which South Korea will engage in supporting Ukraine is expected to become a key issue for South Korea's foreign and security policy.

Phase 2: In-depth Issue Analysis

In-depth Analysis Report on Ukraine's Intensified Offensive in Crimea and the Russia-Ukraine War Situation

1. Analysis of the Root Causes of the Issue

Ukraine's intensified offensive in Crimea is not merely a tactical choice but stems from a strategic necessity to break the structural stalemate of the war. Amidst the ongoing attrition of personnel and materiel on the ground by Russia, Ukraine is shifting from direct frontal assaults to an indirect approach focused on neutralizing enemy logistics and strategic strongholds. This stems from a realistic assessment that Ukraine is structurally disadvantaged in terms of troop numbers and artillery shell production compared to Russia. In other words, if a direct breakthrough of the front lines is realistically difficult, it is a rational choice to shift the strategic focus towards weakening Russia's overall war-fighting capability.

There is a clear military logic behind Crimea's emergence as the core target of this strategy. Crimea houses Sevastopol, the home base of the Russian Black Sea Fleet, and plays a central role in supplying the entire southern front [7]. As long as Russia supplies troops and materiel to the occupied territories in southern Ukraine through Crimea, Russia's military strength on the Kherson and Zaporizhzhia fronts will inevitably be sustained. Therefore, paralyzing Crimea's logistical functions is the most efficient way to weaken Russia's combat power across the southern front [12]. Ukraine's targeted strikes on railway bridges, fuel facilities, and military airfields are precisely in line with this logic [13].

Furthermore, political calculations to favorably reshape the negotiation landscape are deeply embedded in the root causes of this offensive. Russia has demanded de facto surrender from Ukraine as a prerequisite for negotiations, namely its neutralization and the withdrawal of Ukrainian forces from eastern Donetsk [1]. Ukraine, unwilling to accept these demands, has no choice but to adopt a strategy of increasing Russia's negotiation costs through military pressure, forcing Moscow to engage in negotiations under realistic conditions. President Zelensky's approval of the SBU's 40-day pressure campaign should be understood in this context [16], as it is both a military operation and a political act to secure negotiation leverage [1].

2. Structural Context

Political Structure

On the political level, the current offensive in Crimea serves to simultaneously meet the dual needs of satisfying internal political pressure within Ukraine and maintaining international support. As the war drags on, demands for tangible battlefield successes are increasing within Ukraine, and the Zelensky government faces political pressure to continuously demonstrate its war-fighting capability and resolve both domestically and internationally. Successful strikes on Crimea meet these political needs while also serving as a signal to Western supporters that Ukraine still possesses the capacity to wear down Russia's war machine [10].

Russia's political structure also provides an important context for understanding this situation. The Putin regime has used Crimea, since its annexation in 2014, as a symbol of Russian nationalism and a basis for its political legitimacy. Therefore, the situation where Ukrainian attacks on Crimea cause tangible damage and lead to the declaration of a state of emergency [2][5] has the effect of cracking Putin's political narrative, beyond mere military losses. The Russian authorities' attempt to downplay the emergency as a measure for "resolving economic issues" [8] reflects this political sensitivity.

Economic Structure

Economically, Ukraine's strategy of isolating Crimea is effectively increasing Russia's war-sustaining costs. Targeted strikes on fuel facilities, oil infrastructure, and the power grid are paralyzing Crimea's economic functions, leading to fuel shortages and widespread power outages [2][15]. As the impact on civilian life becomes visible, with half of Crimea experiencing power outages and the suspension of children's camp operations [9], the cost of Russia's occupation and governance is rapidly escalating. This forces Russia to allocate more resources to maintain stability in Crimea, thereby diverting resources that could otherwise be used to support the front lines, creating a structural pressure.

Furthermore, Ukraine's drone attacks continuously targeting Russia's oil infrastructure have a long-term effect of weakening Russia's war financing itself. The prospect that the Moscow refinery may not resume operations within the year [3] suggests that Ukraine's strategy of targeting economic infrastructure is exerting structural pressure not only on short-term military effects but also on Russia's overall war economy.

Security Structure

From a security perspective, this offensive reflects a broader structural trend of changing strategic roles for drone technology. Ukraine is employing an asymmetric strategy by operating a large number of relatively inexpensive long- and medium-range drones to deplete Russia's high-cost air defense systems. The Russian Ministry of Defense's announcement of intercepting 660 Ukrainian drones overnight [4][6] paradoxically demonstrates that the scale and frequency of Ukraine's drone offensive are placing a significant burden on Russia's air defense network. Reports of Russia redeploying air defense assets to protect Moscow and the Crimean Bridge [3] indicate that Ukraine's offensive is forcing Russia to re-prioritize its defensive resources.

Moreover, this offensive has significant implications for the security structure of the Black Sea. Strikes on Russian logistics support vessels docked at the port of Kerch and a ferry under construction [14] demonstrate Ukraine's capability to threaten maritime supply lines. This materializes the security threat to Russia's Crimean maritime supply routes and restricts the operational freedom of the Russian Navy in the Black Sea.

3. Historical Precedents and Comparison of Similar Cases

Island Isolation Strategy in World War II

Ukraine's strategy of isolating Crimea shares a similar logical foundation with the 'Island Hopping' strategy employed by the United States in the Pacific theater during World War II. Led by MacArthur and Nimitz, U.S. forces opted for a strategy of cutting off supply lines and isolating heavily defended Japanese strongholds rather than directly assaulting them, allowing their combat power to be naturally depleted. Ukraine's approach of gradually isolating Crimea by targeting railway bridges, fuel facilities, and military airfields, rather than directly retaking it, is based on the same strategic logic [12]. However, while naval blockade was the key means in the Pacific War, the technological context differs in that drones are playing that role for Ukraine.

Lessons from the Vulnerability of Logistics in the Falklands War

The 1982 Falklands War provides a historical precedent demonstrating how the vulnerability of long-distance supply lines can dictate the course of a war. Argentina occupied the Falkland Islands, but its occupying forces rapidly weakened as Britain effectively severed Argentine supply lines through a naval blockade and aerial bombardment. The Crimean Peninsula, with its connection to the mainland relying on limited routes such as the Kerch Bridge and the North Crimean Canal railway bridge, possesses a similar structural vulnerability[13]. Ukraine's strategy of targeting these connection routes is essentially identical to the blockade logic employed by Britain in the Falklands War.

Attempts to Block the Ho Chi Minh Trail during the Vietnam War

The US's persistent aerial bombardment to block the Ho Chi Minh Trail during the Vietnam War simultaneously illustrates the effectiveness and limitations of supply line interdiction strategies. Despite the intensive bombing by US forces, North Vietnam developed alternative routes and mobilized manpower to maintain its supply lines, suggesting that for supply line interdiction to be decisive, strategic consistency and sustainability are necessary beyond mere repetitive strikes. For Ukraine's strategy of isolating Crimea to succeed, inflicting sufficient cumulative damage before Russia can develop alternative supply routes will be crucial.

Precedent of Drone Warfare in the Nagorno-Karabakh War

The 2020 Nagorno-Karabakh War between Azerbaijan and Armenia is considered the first instance where drones emerged as a decisive tool for transforming modern warfare. Azerbaijan systematically neutralized Armenia's air defense systems, armored units, and artillery positions using Turkish-made Bayraktar TB2 drones, demonstrating that relatively inexpensive drones could overwhelm expensive conventional weapon systems. Ukraine's offensive in Crimea represents a further evolution of this precedent, escalating into large-scale unmanned aerial operations involving the simultaneous deployment of 660 drones[4][6]. This indicates that drone warfare has matured beyond tactical utilization in Nagorno-Karabakh to become an operational tool at the strategic level.

4. Key Variables in the Development of the Issue

Whether Russia Maintains Its Air Defense Capabilities

One of the most critical variables determining the future course of the war is how effectively Russia can maintain its air defense capabilities in Crimea. Reports indicating that Russia is redeploying air defense assets to defend Moscow and the Kerch Bridge[3] suggest that Russia is already facing challenges in prioritizing its air defense resources. If Ukraine's sustained drone offensive succeeds in depleting Russia's air defense missile stocks, the effectiveness of strikes on Crimea will dramatically increase. Conversely, if Russia reinforces its air defense network and enhances its drone countermeasures, the impact of Ukraine's offensive may gradually diminish.

Sustained Western Support and Arms Supply

Ukraine's drone offensive capabilities rely significantly on Western technical support and component supplies. As long as Western countries maintain their commitment to supporting Ukraine, Ukraine can sustain its drone production and operational capabilities. However, changes in the political environment within the United States or increased support fatigue in Europe could impose constraints on Ukraine's operational sustainability. In particular, the expansion of long-range strike capabilities is directly linked to the scope of weapons use permitted by the West to Ukraine, making Western policy decisions a key variable.

Russia's Willingness to Negotiate and Internal Political Dynamics

Another important variable is whether Russia is willing to adjust its negotiation terms in response to military pressure. Although Russian Foreign Minister Lavrov stated that Russia is ready for new peace negotiations "at any time," it remains unclear whether this reflects a genuine willingness to negotiate or is merely diplomatic rhetoric to manage international opinion. The impact of cumulative damage in Crimea on Russian domestic public opinion and elite groups, and how this will be reflected in Putin's policy decisions, will be a significant turning point in the future course of the war.

Ukraine's Operational Sustainability and Fatigue

Finally, Ukraine's own operational sustainability is a key variable. It is crucial to assess whether Ukraine has sufficient human and material resources to maintain the current level of offensive intensity after the conclusion of the SBU's 40-day pressure operation[16], and how the war fatigue resulting from the prolonged conflict will affect military operations. Particularly, in a situation where Russia continues large-scale attacks on mainland Ukraine, Ukraine's ability to manage the dual burden of defense and offense simultaneously will determine the sustainability of its strategy.