President Donald Trump’s second‑term foreign policy is now framed around an assertive regional stance he is calling the 'Donroe Doctrine'. After a US raid in Caracas that, according to BBC reporting, resulted in the capture of Venezuela’s president Nicolás Maduro and his wife, markets are weighing what this means for commodities and shipping routes in early 2026.

Trump revived the 1823 Monroe Doctrine in his language and recast it to justify a harder line across the western hemisphere. For investors, that translates into familiar pressure points: sanctions risk, trade disruption and costlier insurance. Those usually show up first in crude spreads, metals supply contracts and war‑risk premia rather than headline equity indices.

On Greenland, where the US already operates Pituffik Space Base, Trump said the United States 'need[s] Greenland from the standpoint of national security' and claimed the region was 'covered with Russian and Chinese ships'. The Arctic island sits roughly 2,000 miles north‑east of the US and, as the BBC notes, is rich in rare earth minerals used in smartphones, electric vehicles and defence equipment in a market where China dominates refining.

Greenland’s prime minister Jens Frederik Nielsen rejected any notion of US control as a 'fantasy', saying dialogue must respect international law. Politics aside, upstream access is only one piece of the puzzle. Permitting timelines, transport logistics and processing capacity are the commercial bottlenecks. If Washington pushes strategic stockpiles or offtake agreements, that could refocus attention on western rare earth developers and tighten spot prices.

As polar ice retreats and seasonal Arctic passages lengthen, new North Atlantic routes are inching from theory to practice. That shifts voyage economics and raises questions for shipowners and insurers on ice‑class hulls, search‑and‑rescue coverage and environmental liabilities. Any US–Denmark–Greenland friction would add policy uncertainty just as carriers explore time‑saving northern lanes.

To the south, Trump warned Colombia’s president Gustavo Petro to 'watch his ass' hours after the Venezuela operation, escalating a dispute that began when the US started striking boats in the Caribbean and eastern Pacific it said were carrying drugs. Washington sanctioned Petro in October, alleging he allowed cartels to 'flourish', according to the BBC.

Colombia is a meaningful exporter of crude and a producer of gold, silver, emeralds, platinum and coal. Heightened US pressure would lift compliance risk for buyers of Colombian cargoes, complicate trade finance and add volatility to the peso and sovereign spreads. For Gulf Coast refineries configured for heavier barrels, any disruption to Latin American flows can tighten specific crude differentials and lift product cracks (refinery margins).

Outside the 'Donroe' frame, Trump warned Iran would be 'hit very hard' if authorities escalate violence against protesters. He has previously ordered strikes on Iranian nuclear facilities, and Israel’s large operation last year culminated in a 12‑day Israel–Iran conflict, per the BBC account. A Mar‑a‑Lago meeting with Israel’s prime minister reportedly put Iran at the top of the agenda, with US media flagging potential new strikes in 2026. Any flare‑up risks higher war‑risk premia and shipment delays through the Strait of Hormuz.

On Mexico, Trump has kept the rhetoric sharp, signing an order on day one to rename the Gulf of Mexico the 'Gulf of America'. He argues drugs are 'pouring' through Mexico; President Claudia Sheinbaum has rejected any US military action on Mexican soil. The market read‑through is whether cross‑border trade, energy flows and nearshoring plans face new friction. Even talk of operations can cool capital spending and add foreign‑exchange volatility.

Cuba remains under long‑standing US sanctions and relied on Venezuela for a reported 30% of its oil. Trump said the island is 'ready to fall' and that no new US action may be needed. With Nicolás Maduro now out of the picture, supply to Havana could be vulnerable. US Secretary of State Marco Rubio told reporters: 'When the president speaks, you should take him seriously'-a clear signal of where policy could head next.

For investors, this looks like a sanctions‑and‑shipping story with commodity‑specific spillovers rather than an immediate macro shock. We are watching for any widening of secondary sanctions, how insurers reprice Caribbean and Gulf transits, and whether Washington moves from rhetoric to executive actions on Arctic minerals. Any combination would filter into rare earth prices, tanker day rates and regional bond markets.

Practical steps for UK and European firms now: refresh sanctions maps for Latin America, review exposure to Colombian cargoes and counterparties, stress‑test supply chains reliant on Chinese rare earth refining against a scenario of accelerated western offtakes, and confirm insurance coverage for route changes in the North Atlantic and Caribbean. Politics may move quickly; balance‑sheet hygiene shouldn’t wait.