Secretary of state Marco Rubio has insisted the US will impose fresh sanctions on Russia if there is no progress on a peace deal with Ukraine, and denied that Washington was tempering its military support for Kyiv.
Rubio was speaking in the Senate a day after President Donald Trump held a two-hour phone conversation with Russian President Vladimir Putin that failed to yield a breakthrough in resolving the war in Ukraine.
Democratic politicians have accused Trump of letting down Ukraine by failing to exert pressure on Putin to end the war, for example by threatening further sanctions if he did not agree a ceasefire, as demanded by the US’s European allies.