ThinkTankWeekly

Britain’s next prime minister faces deep foreign policy challenges – whether Burnham or another

Chatham House | 2026-06-26 | defense

Topics: China, Europe, Middle East, Russia, Ukraine

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English Summary

The next UK prime minister will face significant foreign policy challenges stemming from fundamental shifts in post-war relationships, particularly with the US and Europe. The core challenge lies in the US's increasing reluctance to underwrite European security and the intensifying geopolitical rivalry between the US and China. To address this strategic vacuum, the UK must execute a comprehensive 'reset,' moving beyond mere personal diplomacy. This requires establishing a longer-term defense and security relationship with European allies that can sustain rising commitments. Failure to reconcile these escalating costs and diminished American guarantees threatens Britain's ability to maintain its critical role in collective European security.

中文摘要

下一任英國首相將面臨重大的外交政策挑戰,這些挑戰源於戰後關係的根本性轉變,特別是與美國和歐洲之間的關係。核心難題在於美國日益不願為歐洲安全提供擔保,以及美中之間地緣政治競爭的加劇。為了應對這一戰略真空,英國必須執行一次全面的「重啟」(reset),不能僅限於個人層面的外交努力。 這要求英國與歐洲盟友建立長期、穩固的國防和安全關係,以支持不斷增加的承諾成本。如果無法調和這些不斷升高的開支和美國擔保的減弱,將威脅到英國在集體歐洲安全中扮演關鍵角色的能力。

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