The Geopolitical Cost Function of the Donroe Doctrine
To understand the current shift in U.S. foreign policy toward China's economic statecraft, analysts must move past simple observations of diplomatic theater. The "Donroe Doctrine," a phrase used to describe the Trump Corollary to the Monroe Doctrine, redefines the strategic calculus of the Western Hemisphere and global maritime trade routes. This doctrine transforms the U.S. approach from one of benign oversight into an assertive, resource-driven mercantilism aimed at cutting off China's access to vital assets.
Rather than viewing this doctrine as an ad-hoc set of tariffs or an arbitrary political stance, we must break down its economic and logistical components. It operates as a structured effort to limit hostile ownership of key assets, re-shore supply chains, and disrupt the Belt and Road Initiative's footprint in Central and South America.
The strategy hinges on the redirection of capital flows and the control of trade bottlenecks. When we examine the underlying mechanisms, the doctrine functions through three core pillars: maritime choke-point control, logistical infrastructure dispossession, and critical mineral supply chain recalibration.
Structural Anatomy of the Doctrine
Maritime Choke Point Control
The United States has systematically expanded its strategic reach beyond the traditional boundaries of the Americas. This includes a stepped-up posture in the Strait of Hormuz and new defense partnerships in the Indo-Pacific, such as with Indonesia. By tightening control over global energy and trade routes, the U.S. aims to alter the risk premium for Chinese commercial vessels.
The economic effect is an increase in the cost function for Chinese state-owned enterprises that rely on maritime transport for energy imports and manufacturing inputs. When the U.S. Navy and allied forces impose stricter tracking or interdiction measures, insurance premiums for vessels traveling through these choke points rise. This forces Chinese logistics planners to reroute ships, adding time and fuel costs to their overall operations.
The calculation of the maritime cost function ($C_m$) can be expressed as:
$$C_m = T_d + I_p + F_a$$
where $T_d$ represents transit delays, $I_p$ denotes the insurance premiums, and $F_a$ is the cost of alternative routing. As the United States asserts more control over key choke points, $C_m$ increases, creating a structural drag on the flow of Chinese exports to Western Hemisphere markets.
Logistical Infrastructure Dispossession
The second pillar involves the use of lawfare and regulatory pressure to remove Chinese-owned or operated assets from critical logistics nodes. The targeted operation against Hutchison Ports in the Panama Canal provides a clear template. By using Supreme Court rulings and State Department diplomatic pressure, the administration has systematically replaced Chinese operators with Western logistics firms, such as Denmark's Maersk.
This denies China the ability to control key transshipment points. The Panama Canal handles a significant volume of global container traffic. By asserting control over both the Atlantic and Pacific access points of the canal, the U.S. introduces friction into Chinese export routes destined for the Western Hemisphere.
To measure the impact of this dispossession on supply chains, analysts look at the throughput time at the Balboa and Cristobal terminals. When control shifts from a state-subsidized operator to a commercial Western operator, the cost of transshipment increases, reflecting the higher regulatory standards and the extraction of economic rent by the new operators.
Critical Mineral Supply Chain Recalibration
The third pillar targets the primary inputs for green energy technologies, including lithium and antimony. The Donroe Doctrine seeks to force Latin American nations—particularly the lithium triangle countries like Bolivia and Chile—to choose between Chinese capital and access to the U.S. market.
Consider the logistical challenge of moving thousands of tons of lithium from the Salar de Uyuni in Bolivia across rough terrain to Chilean ports, and then through the Panama Canal. These routes face high transport premiums. By replacing leadership in state-owned lithium companies and offering guaranteed market access, the U.S. seeks to break Chinese dominance over processing facilities.
The logistical cost of moving minerals ($L_c$) is a function of distance ($d$), terrain roughness ($r$), and transport capacity ($q$):
$$L_c = f(d, r, \frac{1}{q})$$
When the supply chain lacks efficient infrastructure, $L_c$ spikes. The Donroe Doctrine attempts to alter this equation by redirecting Western capital into the region to build infrastructure, thereby lowering $L_c$ for Western firms while raising it for Chinese competitors.
The Microeconomics of the Supply Chain Bottleneck
The structural conditions of the global mineral trade favor Chinese dominance because Chinese firms operate with lower capital-output ratios in extraction and infrastructure projects. To understand the vulnerability of these supply chains, we must quantify the friction created by the new policy environment.
The Transport Premium
Moving essential minerals like antimony and lithium across the Pacific requires access to shipping lanes and port infrastructure that are increasingly under U.S. or allied control. When supplies must be diverted to avoid Chinese ports, the transit time increases by up to 20 days. This diversion creates a variable transport cost ($V_{tc}$) that strains the margins of battery manufacturers and grid-scale energy storage companies.
The difference in cost between Chinese-controlled supply routes and regulated Western routes represents the economic penalty of the Donroe Doctrine. While the Chinese route is cheaper in terms of capital expenditure due to China's dominant position in mineral processing, the alternative offers greater regulatory security and lower risk of asset seizure by the U.S. government.
Capital Expenditure Reallocation
Western investment has lagged in these sectors due to higher regulatory standards and ESG constraints. Without direct state subsidies or guaranteed off-take agreements, Western firms struggle to match the pricing offered by the China Development Bank.
To overcome this bottleneck, the U.S. government must subsidize the capital expenditure ($K_{ex}$) of domestic processing facilities. The subsidy function ($S$) can be modeled as:
$$S = K_{ex, \text{China}} - K_{ex, \text{US}}$$
If $S$ is positive, it offsets the cost disadvantage of Western processing plants. However, if the U.S. fails to provide sufficient subsidies, private capital will remain on the sidelines, leaving the supply chain exposed to Chinese dominance.
The Risk Premium
The threat of targeted sanctions or asset freezes creates a disincentive for Latin American governments to partner with Chinese firms. This risk premium ($R_p$) leads to higher interest rates for infrastructure projects funded by external non-Western powers.
For instance, the Brazilian Supreme Court's intervention in energy grid projects and the dispossession of Chinese port operators in Panama have raised the cost of capital for Chinese state-owned enterprises in the region. This creates a regulatory bottleneck that delays the execution of infrastructure projects.
The policy shift assumes that the U.S. can replace the vast amounts of capital China injects into these developing economies. However, the economic reality is that Latin American countries often turn to China not out of ideological alignment, but because Chinese entities are the only ones willing to bid on underfunded infrastructure.
The Cost of Structural Policy Overreach
The implementation of the Donroe Doctrine carries unintended consequences that may weaken Washington's long-term position. When the U.S. acts as a unilateral enforcer of trade rules within the territorial waters or jurisdictions of sovereign nations, it creates a precedent that other powers can exploit.
Normative Authority and Precedents
When the U.S. justifies the dispossession of assets based on strategic necessity, it provides a legal and normative justification for other nations, such as China, to apply the same logic to their own spheres of influence. If the prohibition on territorial coercion is selectively enforced, it ceases to function as a binding international rule.
The danger lies in the precedent set for other contested regions. If Washington exercises power asymmetry to secure assets in Latin America, the international community no longer has a credible basis to object when other powers use similar economic or military coercion to achieve their own objectives in the South China Sea or Eastern Europe.
Dual Supply Chain Costs
The enforcement of the doctrine requires multinational corporations to maintain dual supply chains. Companies must operate one supply chain for the U.S. market and another for the Chinese market. This duplication of assets destroys economies of scale and increases the variable cost of production for advanced technology and pharmaceutical sectors.
- U.S. Market Supply Chain: High regulatory compliance, localized mineral sourcing, and a higher unit cost structure.
- Chinese Market Supply Chain: Lower compliance costs, processed mineral imports, and lower unit cost structures.
This structural separation creates a drag on corporate profitability. For example, in the high-wage sectors of aerospace and machinery, the reliance on imported components from China cannot be easily replaced without significant capital investments in domestic foundries and fabrication facilities.
Alienation of Near-Neighbors
The use of tariff threats and political pressure against near-neighbors creates diplomatic friction. Countries such as Mexico and Colombia, which are critical to the nearshoring strategy of the United States, find themselves caught in the middle of the strategic competition.
By conditioning trade access on compliance with the Donroe Doctrine, the U.S. alienates local political elites who wish to retain their economic ties with both superpowers. This creates an opening for China to present itself as a more reliable and less coercive economic partner, despite the strings attached to its own investments.
The Shift in Strategic Equilibrium
The Donroe Doctrine alters the strategic equilibrium between the United States and China. While the short-term disruptions have stalled some Chinese investments in the Western Hemisphere, they have not fully decoupled Latin America from the Chinese economic sphere.
Offensive Economic Statecraft by Beijing
Rather than retreating from Latin America, China has switched its economic statecraft from a defensive posture to a more offensive one. Beijing is now offering advantageous commercial deals to U.S. allies in other regions, such as the Persian Gulf, to compensate for the loss of access in the Americas.
In 2025, Saudi Arabia led all nations in new Chinese construction activity, a trend that continues to complicate U.S. security partnerships. By establishing new logistics hubs and providing capital for critical infrastructure in the Middle East, China ensures the security of its energy supply routes even if the Strait of Hormuz experiences blockades or disruptions.
Supply Chain Vulnerabilities
Chinese planners are also utilizing their dominant position in the processing of critical minerals to create supply bottlenecks. The example of antimony demonstrates this vulnerability: a disruption in the processing of this critical mineral can halt advanced manufacturing in the United States within a matter of weeks.
The antimony supply chain is highly concentrated, with China controlling more than 50% of the world's production and nearly 80% of the processing capacity. If Beijing decides to restrict the export of antimony to the United States, it creates an immediate bottleneck in the production of semiconductors, military hardware, and pharmaceutical products.
This vulnerability reveals the limitation of the Donroe Doctrine's focus on the Western Hemisphere. The doctrine addresses the extraction of minerals but does not solve the bottleneck in the midstream processing capacity, which requires significant amounts of energy and specialized chemical engineering talent.
Strategic Execution
- Deploy targeted subsidies to ensure domestic mineral processing facilities receive direct financial support to lower the cost of capital compared to Chinese competitors, using output-based performance metrics.
- Diversify transshipment routes through bilateral agreements with Pacific-facing Latin American states, upgrading port facilities in Chile and Peru to handle container vessels without relying on state-owned operators.
- Establish state-backed investment vehicles to bid on South American infrastructure projects with lower interest rates, providing local governments with a viable alternative to Chinese capital.
