Trump's Taiwan Arms Gambit Forces Berlin, Tokyo and London to Rebuild Energy Security Assumptions
Washington's willingness to delay a congressionally approved Taiwan arms package is reshaping how European and Asian capitals assess exposure to U.S. energy supply agreements.
President Donald Trump's announcement on Chinese soil in June (2026-06-11) that he was considering holding up a $14 billion arms sales package to Taiwan — defense articles Congress had already authorized — did more than unsettle alliance managers in Taipei. It signaled to every allied capital that presidential discretion can override legislative commitments.4
Energy ministers in Berlin and Tokyo read that same signal through a different lens. If Washington can withhold congressionally approved arms as a negotiating tool, the same logic applies to LNG export licences, sanction waivers and technology transfer approvals. European and Asian energy strategies have been built on the assumption that American supply relationships are durable; that assumption now looks less solid.
ICE Endex TTF front-month gas traded at €75.83/MWh on Wednesday (2026-09-09), flat on the day, while German baseload power sat at €154.49/MWh. Both markets reflect a European system still absorbing the withdrawal of cheap Russian pipeline gas and therefore acutely sensitive to any disruption in Atlantic LNG flows. The U.S. exports roughly a third of global LNG volumes, and access to that supply ultimately flows through bilateral relationships with an administration that has shown it views trade as leverage.2
Japan's exposure is different but no less acute. USD/JPY traded at 153.30 on Wednesday morning (2026-09-09), with the yen under pressure partly from energy import costs. JKM Asian LNG front-month was at $24.38/MMBtu in early trading (2026-09-09). Tokyo has spent years diversifying away from Middle Eastern oil dependence; it now faces the prospect that the American relationships it substituted may carry their own conditionality.4
The Atlantic Council warned in late May (2026-05-22) that the Trump administration risks undermining its own "NATO 3.0" agenda through force posture moves that have European governments feeling whiplash. Washington has pushed for greater European military contributions for decades. Now that European defence budgets are rising, the administration is eroding the trust required to make that burden-sharing arrangement work.2
The numbers on European defence are moving fast. Twenty-three allies are expected to meet or exceed the 2% of GDP spending target this year, against just three in 2014 when the pledge was formalised, according to the Economist's May (2026-05-19) reporting. Ukraine's friends have committed roughly €297 billion ($319 billion) in economic and military aid since early 2022, with about 60% coming from European countries, per Kiel Institute figures published by the Economist. European capitals now contribute more in aggregate than Washington.1
Foreign Policy argued in an analysis published on Wednesday (2026-09-02) that Trump has made coercion a central feature of American statecraft toward friends as much as adversaries. The piece pointed to the attack on the International Criminal Court as an opening for allied solidarity rather than piecemeal capitulation to U.S. pressure applied bilaterally.5
The Atlantic Council's analysis from late May (2026-05-29) urged EU policymakers to begin planning for how the bloc's mutual defence clause would operate if Ukraine and Moldova joined. Such planning would effectively build a European security backstop, reducing dependence on NATO's Article 5 and the president who currently interprets it.3
But military architecture moves slowly, and energy infrastructure moves more slowly still. European LNG import terminals and Asian fuel-supply chains took years to build and cannot be redirected in a single budget cycle. The Economist's May (2026-05-19) assessment noted that America built a collective-defence alliance in Europe but a hub-and-spoke arrangement in Asia, where countries have bilateral pacts with Washington but not with each other. Japan cannot adopt Germany's approach of deepening intra-European coordination because no equivalent regional framework exists.1
The near-term test is not military. It is whether Berlin, Tokyo and London can coordinate their responses to American pressure rather than being picked off individually. Germany has energy leverage through its purchasing scale in European gas markets, but TTF prices at these levels leave little room to absorb supply shocks caused by a deteriorating bilateral relationship with Washington. Japan's leverage is thinner still.
The ICC dispute, as Foreign Policy framed it, offers an early test of whether allied coordination is achievable. A joint European-Asian response would carry real costs for Washington. History suggests capitals will spend time determining whether Trump's pressure is a negotiating tactic before committing to that kind of exposure. The asymmetry in each country's dependence on American goodwill is exactly the variable Washington's negotiators understand best.5