Trump’s “G2” Taiwan and tariff shock—while allies ready Hormuz force

President Donald Trump’s “G2” framing—tête-à-tête with Xi Jinping rather than broad coalition management—has triggered alarm among US allies, according to Politico. The article points to Trump’s summit in Beijing last month, where he effectively positioned bilateral US-China coordination as the primary vehicle for addressing China’s “growing economic threat.” In parallel, Bloomberg reports the US Supreme Court declined to curb Trump’s tariff authority, leaving first-term China import taxes in place on hundreds of billions of dollars in goods. Together, these moves signal a Washington approach that is more unilateral in both trade and strategic bargaining, even as partners worry they will be sidelined. The geopolitical stakes extend beyond economics into security architecture and crisis bargaining. Taiwan-focused reporting highlights a fear in Taipei that Washington and Beijing could “stabilize” their relationship in ways that leave Taiwan’s interests behind, especially if US leverage is channeled into a narrow G2 bargain. Meanwhile, France and the UK signaling readiness for a military mission in the Strait of Hormuz suggests European willingness to shoulder maritime security burdens, potentially to prevent escalation that could disrupt energy flows. Macron’s comments about monitoring Iranian nuclear-related radioactive sites also add a non-trivial layer of European involvement in the enforcement ecosystem around US-Iran understandings. Market implications are immediate and multi-channel: renewed or expanded Trump tariff measures are estimated to hit a large share of Brazil’s exports to the US. O Globo cites Brazil’s CNI estimating that a tariff “tarifaço” resumption could affect 35.2% of Brazil’s exports to the United States, raising the probability of retaliation, trade diversion, and margin compression for exporters. On the China front, the Supreme Court’s decision supports the persistence of tariff-driven cost pressures across industrial supply chains, with knock-on effects for importers, logistics, and pricing power in sectors exposed to China-origin inputs. In energy and shipping, any credible European readiness around Hormuz increases the risk premium for Middle East sea-lane insurance and freight, even before kinetic events occur. What to watch next is whether Washington converts the G2 concept into concrete policy instruments that exclude allies, and whether courts or Congress constrain further tariff escalation. For trade, the trigger is the pace and scope of any renewed tariff announcements and the sectoral targeting of Section 301-style measures, alongside any Brazilian countermeasures and US negotiation offers. For security, monitor signals of operational planning for Hormuz—rules of engagement, basing, and coalition composition—because these determine how quickly a crisis could widen. For Taiwan and China, the key indicator is whether US statements and policy actions explicitly reaffirm Taiwan’s security posture or instead emphasize “stabilization” language that Taipei reads as transactional. Finally, in the health domain, OMS and Lula’s push for a G7 pandemic treaty completion adds a parallel diplomatic track that could compete for bandwidth with hard security and trade negotiations.

Geopolitical Implications

• 01

  A bilateral US-China bargaining model (“G2”) may weaken allied coordination and complicate unified deterrence and sanctions enforcement.

• 02

  Taiwan’s perceived risk of being traded off increases the probability of crisis miscalculation, especially if US messaging shifts toward stabilization over explicit commitments.

• 03

  European willingness to plan for Hormuz security indicates a potential division of labor that could either prevent escalation or accelerate operational entanglement.

• 04

  France’s nuclear-related monitoring stance toward Iranian radioactive sites signals expanding European involvement in compliance/enforcement frameworks tied to US-Iran understandings.

Key Signals

• —Any new US tariff announcements: scope, sector targeting, and whether they explicitly bypass allies.
• —US policy language toward Taiwan after the Trump–Xi summit (stabilization vs. explicit security commitments).
• —Operational details for any Hormuz mission: basing, command structure, and coalition participation.
• —Follow-through on European monitoring of Iranian radioactive/nuclear-related sites and whether it aligns with US-Iran agreements.
• —G7 timeline for completing a pandemic treaty, which could compete with bandwidth for hard security and trade negotiations.