Russia’s attack on the Ukrainian border city of Sumy has placed unwelcome emphasis on just how little fruit the White House’s relentless pursuit of diplomacy has borne.

I just got here, and for four years during my term, had no problem in preventing it from happening,” the president posted on Truth Social.

Steve Witkoff held talks with the Russian president, meanwhile Moscow's ambassador to the UK told the BBC the US is not Russia's ally.