Secretary of State Rubio’s Latin America Tour and the Formation of the ‘Shield of the Americas’ Alliance: Implications and Policy Recommendations

Executive Summary

Secretary of State Rubio’s tour of Colombia, Ecuador, and Peru and the launch of the “Shield of the Americas” alliance demonstrate the second Trump administration’s shift toward implementing its Western Hemisphere priority strategy. This follows a series of phased developments, including the operation to arrest Nicolás Maduro, the U.S. Southern Command-led formation of the alliance, and Secretary of Defense Hegseth’s announcement of expanded ground operations. The closer alignment of right-wing governments in the region, such as those in Colombia, Peru, and Ecuador, with the United States provides the backdrop for these moves. However, Colombia is pursuing a dual-track approach, expanding cooperation with the U.S. on critical minerals and nuclear energy while maintaining its Belt and Road Initiative infrastructure projects. This suggests that U.S.-China strategic competition is unlikely to lead to an immediate realignment of blocs in the region. Discussions on tariff elimination will likely proceed as conditional, phased negotiations linked to security commitments, such as reducing coca cultivation. The South Korean government and Korean companies should adopt a strategy of securing dual access by establishing independent bilateral channels with Colombia, Peru, and Ecuador in the natural resources and infrastructure sectors.

I. Analysis of the Current Situation

Secretary of State Rubio’s Latin America Tour and the Formation of the ‘Shield of the Americas’ Alliance: An Analysis

1. Background and Developments

This tour is consistent with a series of measures undertaken since the second Trump administration codified the Western Hemisphere as a priority in its November 2025 National Security Strategy [3]. The January 2026 operation to arrest President Maduro and the U.S. Southern Command-led establishment of the “Shield of the Americas” have already been identified as examples of this policy in action [3]. Subsequently, Secretary of Defense Hegseth announced at the A3C Forum in Panama an expansion of ground operations against cartels, marking a phased escalation of U.S. security engagement in the Western Hemisphere from sea to land [6].

The shift in Colombia’s political landscape was the immediate catalyst for the tour. Following the departure of former President Petro, the new administration under President de la Espriella has pivoted toward aligning with the Trump administration’s hardline stance [12]. The Spanish newspaper ABC assessed that Colombia has now entered a phase of “accepting Trump’s hard line” [12]. In his visit, the first by a cabinet-level official to the de la Espriella government just one month after its inauguration, Secretary Rubio directly demanded a reduction in coca cultivation acreage and the tracking of drug trafficking organizations’ financial networks [12].

In Ecuador, a framework for security, economic, and intelligence cooperation was already established during a meeting with President Noboa last September, making this visit primarily a follow-up review [9][14]. Peru, receiving its first high-level U.S. official since President Fujimori’s inauguration, was announced as a new member of the “Shield of the Americas” [10][4].

2. Current Situation

During the first stop of his tour in Barranquilla, Colombia, Secretary Rubio discussed security, trade, and regional cooperation with President de la Espriella [11]. The South China Morning Post identified Colombia’s participation in the Belt and Road Initiative (BRI) and the signing of agreements on critical minerals and civilian nuclear energy cooperation as key agenda items for the meeting [13]. A Colombian government official, speaking on condition of anonymity, confirmed that China’s investment in critical infrastructure was on the agenda [13]. This suggests that Colombia is pursuing a balancing strategy, seeking to secure cooperation with the U.S. on critical minerals and nuclear energy while not completely severing its ties with China.

In Ecuador, talks with the Noboa government were held under the banner of “building true security and promoting economic growth” [9]. El Universo reported that the visit served as a review of the implementation of cooperation agreements on counternarcotics and migration reached last year [14].

In Lima, Peru, Secretary Rubio announced in an interview with the local daily El Comercio that Peru was being welcomed into the “Shield of the Americas,” stating, “We are synchronizing our efforts to protect our hemisphere from transnational and regional threats” [4][7]. He designated Peru as “now a major non-NATO ally” [4]. The announcement was made alongside President Milei of Argentina, President Paz of Bolivia, President Chaves of Costa Rica, President Noboa of Ecuador, President Bukele of El Salvador, President Ali of Guyana, President Asfura of Honduras, President Mulino of Panama, President Peña of Paraguay, and President Abinader of the Dominican Republic [1]. Uruguay’s El País described the alliance as a “transnational crime-fighting initiative convened by the Trump administration to bring together the region’s right-wing governments” [4].

3. Key Actors and Positions

The U.S. Department of State (Secretary Rubio)seeks to institutionalize a bloc of right-wing governments under the pretext of combating transnational crime. Turkey’s Hürriyet Daily News directly characterized the purpose of the tour as being “to consolidate U.S. influence” [15]. From the State Department’s perspective, Colombia is a regained foothold following the departure of the leftist Petro government, while Ecuador and Peru are partners with whom it can deepen and institutionalize existing cooperative ties.

Colombia’s de la Espriella Governmentin its early days, urgently needs to rebuild relations with the U.S. It aims to gain economic incentives, such as cooperation on critical minerals and nuclear energy and the possibility of tariff elimination, in exchange for accepting U.S. demands to reduce coca cultivation and crack down on drug trafficking financial networks [12][13]. At the same time, it is maintaining a dual-track approach, seeking practical benefits from both the U.S. and China rather than abruptly dismantling existing infrastructure projects with China (such as the Bogotá metro) [8][13].

Ecuador’s Noboa Governmentas a friendly nation with an established framework for security, economic, and intelligence cooperation, is using this visit as an opportunity to reaffirm its existing policy course [9][14].

Peru’s Fujimori Governmentseeks to enhance its international standing in security cooperation by joining the “Shield of the Americas” and acquiring major non-NATO ally status [10][4]. However, Peru also has existing assets in its logistics cooperation with China through the Port of Chancay, meaning that its integration with the U.S. does not signify a complete break in relations with China [8].

Chinawhile not an explicit actor in this tour, has become a de facto subject of the discussions, as its participation in the BRI and its infrastructure investments were on the agenda in the meetings with Colombia and Peru [13][8]. A previous EAI analysis noted an asymmetric dynamic in which China has been accumulating “irreversible gains” through tangible investments at the subnational level, whereas the U.S. has relied on “policy announcements” [8].

The bloc of right-wing governments in the region(including Argentina’s Milei, El Salvador’s Bukele, and Paraguay’s Peña) aims to simultaneously secure a justification for strengthening domestic security and gain economic and security support through closer alignment with the U.S. by participating in the “Shield of the Americas” [1].

4. Key Issues

First, it is unclear whether the “Shield of the Americas” will develop into a substantive command and operational integration body or remain a loose coalition based on political declarations. The question of its level of institutionalization, raised since the U.S. Southern Command’s initial proposal, remains unresolved even after Peru’s accession [3].

Second, a key issue is whether the discussions on tariff elimination with Colombia and the agreements on critical minerals and nuclear energy will proceed to the implementation stage. This will be a test of the effectiveness of the economic incentives the U.S. is offering to right-wing governments in the region in the trade and economic security domains [13].

Third, the extent to which Colombia and Peru can sustain their dual-track approach—participating in a U.S.-led security bloc while maintaining existing economic cooperation with China—is a key point to watch in the expanding U.S.-China competition in Latin America [8][13].

Fourth, the rationale of countering drug trafficking organizations is functioning as part of a broader strategy of intervention in the Western Hemisphere, encompassing expanded ground operations and even regime change (the arrest of Maduro). In this context, the potential for friction with countries that have withheld full participation (such as Costa Rica on certain issues and Mexico with its independent approach) also needs to be examined [6].

II. In-Depth Analysis

Secretary of State Rubio’s Latin America Tour and the Formation of the ‘Shield of the Americas’ Alliance: An In-Depth Analysis

1. Analysis of Root Causes

The forces driving this tour are not singular. It is the result of an intersection between Washington’s strategic calculations and the domestic political shifts within the region’s countries.

The cause on the U.S. side boils down to a matter of resource allocation. The second Trump administration codified the Western Hemisphere as a priority in its November 2025 National Security Strategy [3]. This was not an abstract declaration but signified a real readjustment of budgets and troop deployments. Through a series of actions, from the operation to arrest Maduro to the establishment of the “Shield of the Americas,” the U.S. Southern Command has demonstrated a move to put its own backyard in order [3]. The logic of this framework is clear: reducing the diplomatic and military resources consumed in the Western Hemisphere will free up capacity for containing China in the Asia-Pacific [3]. Secretary of Defense Hegseth’s announcement at the A3C Forum in Panama that operations against cartels would be expanded from sea to land is an extension of this same logic [6].

The cause on the regional side is the rightward shift in the political landscape. In Colombia, the leftist agenda of former President Petro has been replaced by President de la Espriella, who is rapidly closing the distance with Washington [12]. The Spanish newspaper ABC assessed that Colombia has entered a phase of “now accepting Trump’s hard line” [12], which also implies that the position of security hardliners has grown stronger in Colombian domestic politics. Peru’s President Fujimori and Ecuador’s President Noboa share the commonality of being right-wing leaders who have made combating drug trafficking organizations and transnational crime a national priority. The lineup of leaders who gathered for the launch of the “Shield of the Americas,” including Argentina’s Milei, El Salvador’s Bukele, and Paraguay’s Peña, also shows that this alliance is an ideologically homogeneous network of right-wing governments [1].

This tour represents the convergence of these two causes. The United States needed to reallocate its resources, and the region’s right-wing governments sought leverage to solve their domestic security and economic problems through closer ties with the U.S. Without this alignment of interests, the “Shield of the Americas” would have remained mere rhetoric.

2. Structural Context

Security Structure: Expanding Intervention via Drug Cartels

The “Shield of the Americas” is nominally an alliance to combat transnational crime [4][7]. In practice, however, it is closer to an institutionalization of the U.S. military’s operational radius. In Colombia, what Secretary Rubio demanded of President de la Espriella was the swift reduction of coca cultivation acreage and the tracking of drug trafficking organizations’ financial networks [12]. This took the form more of a demand for implementation than a proposal for cooperation. When combined with Secretary of Defense Hegseth’s plan to expand ground operations [6], the “Shield of the Americas” has the potential to function as a mechanism for securing the political consent of member countries, thereby providing legal and diplomatic justification for U.S. military operations.

However, this security structure is not uniform. While Colombia has agreed to joint operations, and Panama, the Dominican Republic, and Trinidad and Tobago have been incorporated into the cooperative framework, Costa Rica and Ecuador have not clearly specified their level of participation [6]. The fact that the visit to Ecuador concluded with the somewhat vague rhetoric of “building true security” also suggests that the Noboa government remains cautious about a level of alignment that would involve ground operations [9].

Economic Structure: Parallel U.S.-China Competition over Critical Minerals

Security was not the only substantive agenda item in the Colombia talks. The South China Morning Post reported that the meeting addressed not only Colombia’s participation in the Belt and Road Initiative but also the signing of agreements on cooperation in critical minerals and civilian nuclear energy [13]. A Colombian government official confirmed off the record that China’s investment in critical infrastructure was on the agenda [13]. This indicates that Colombia is pursuing a dual strategy of accepting closer security ties with the U.S. while not fully dismantling its economic relationship with China.

This framework is a recurring pattern throughout Latin America. China has been accumulating irreversible gains through tangible investments at the subnational level, such as the Bogotá metro and Peru’s Port of Chancay, whereas the U.S. has tended to lag in actual capital deployment, often limiting itself to policy-level actions like telecommunications security warnings or sanctions relief [8]. The fact that the possibility of tariff elimination was raised in the Colombia talks should be understood within this context. It can be seen as an attempt to offset Colombia’s economic dependence on China by offering trade benefits in exchange for security cooperation.

Political Structure: The Fragility of Ideological Alignment

While the governments gathered under the “Shield of the Americas” share a right-wing common denominator, the support bases of the individual regimes are not stable. Colombia’s de la Espriella government has been in office for only a month [12]. The governments of Fujimori in Peru and Noboa in Ecuador are also not free from domestic political conflicts. In other words, the institutional foundation of this alliance is directly linked to the political survival of individual leaders, creating a structural vulnerability where a change in government could shake the very cohesion of the alliance.

3. Historical Precedents and Comparative Cases

The handling of the Venezuelan crisis between Great Britain and the United States in the late 19th century provides a useful point of comparison. At that time, Great Britain de facto recognized the U.S. sphere of influence in the Western Hemisphere in the wake of the Venezuelan border dispute, and in return, it transferred its security burden in Asia to Japan through the Anglo-Japanese Alliance [3]. The current framework is structurally similar to this precedent, as it is an attempt by the U.S. to secure resources for containing China in the Asia-Pacific by putting its own backyard in order with the “Shield of the Americas” [3]. However, there is also a clear difference. The 19th-century case was an adjustment of spheres of influence between great powers, whereas the current case is an asymmetric alliance in which the U.S. incorporates the region’s right-wing governments as junior partners.

The operation to arrest Maduro and the Venezuelan oil agreement also serve as relevant precedents. The U.S. carried out a direct military intervention targeting the leader of a sovereign state without the approval of international organizations [3] and subsequently secured its interests through energy cooperation with the interim Rodríguez government [2]. This precedent suggests that the “Shield of the Americas” may not remain a mere consultative body but could evolve into a framework with the capacity to carry out hardline measures within member states when necessary.

A comparison with the Cold War-era Organization of American States (OAS) and the Rio Treaty system is also warranted. At that time, the U.S. formed security alliances with right-wing regimes in the region under the banner of anti-communism. However, these alliances, intertwined with the legitimacy problems of individual regimes, eventually became fertile ground for anti-American sentiment. Although the “Shield of the Americas” puts forward the new rationale of countering drug cartels, the risk that the expansion of the U.S. military’s operational radius could spark sovereignty infringement controversies in the domestic politics of each country remains, just as in past cases.

4. Key Variables Shaping Future Developments

The first variable is whether the expansion of ground operations will actually be implemented. If the cartel-focused ground operations announced by Secretary of Defense Hegseth are indeed launched [6], the participating countries in the “Shield of the Americas” will have to bear the political burden of U.S. military operations on their territory. The choices made by countries that have withheld full participation, such as Costa Rica and Ecuador, will be a test of the alliance’s substantive cohesion [6].

The second variable is how Colombia manages its relationship with China. Whether Colombia can continue its participation in the Belt and Road Initiative while simultaneously pursuing cooperation with the U.S. on critical minerals and nuclear energy [13], or whether it will be forced to choose one over the other under pressure from Washington, will be a touchstone for the future trajectory of U.S.-China competition in Latin America [8].

The third variable is the domestic political stability of the participating regimes. If the de la Espriella, Fujimori, and Noboa governments face political crises during their terms, the “Shield of the Americas” will face the challenge of securing institutional sustainability beyond being a political asset for individual regimes. If a change in government occurs while its level of institutionalization is low, a reorganization of the alliance itself may be inevitable.

The fourth variable is whether trade incentives, including tariff elimination, will be concretized. If the trade benefits offered in exchange for security cooperation do not translate into actual policy, participating countries will begin to question the U.S.’s ability to deliver on its promises. This, in turn, could become a catalyst for a shift in the center of gravity back toward China’s tangible investments [8].