The removal of House Speaker Kevin McCarthy in the US Congress has cast a dark cloud over the already troubled process of Washington’s military and financial aid for Ukraine, as its counteroffensive against Russia grinds on with little change to the frontlines.

Without a Speaker, the House is unable to pass legislation, and it may be a week or more before a successor is elected – throwing America’s military backing for Kyiv into doubt.

The vote to remove McCarthy follows a weekend deal in which funding for the government was extended for 45 days – but in which no provision was made for fresh aid to Ukraine. That left the Biden administration’s $24 billion request for fresh military aid, submitted to Congress in the summer, in limbo. It also left the coffers dangerously low.

US President Joe Biden said at the weekend that he expected McCarthy “to keep his commitment to secure the passage and support needed to help Ukraine as they defend themselves against aggression and brutality.” McCarthy has now lost his role and has ruled out running for Speaker again. While it’s unclear who might succeed him, several potential candidates are skeptical about continuing support for Ukraine at current levels.