US officials are assessing how the incursion might reshape the political and military dynamics of the war, as well as the implications for Washington’s long-shifting stance on how Ukraine can use American-supplied arms.
The stunning raid, catching both Russian and apparently Western leaders by surprise, highlights one of the riskiest dilemmas for the Western-backed defence of Ukraine: President Biden has consistently tried to empower Kyiv to push back Russia’s invasion without risking an American escalation with Moscow. As President Putin has always tried to portray the conflict as a war between Russia and the West, Mr Biden has sought to put clear limits on US policy to deflate that narrative and prevent a conflagration.