Donald Trump’s shocking and mendacious attack this week on the Ukrainian president, Volodymyr Zelenskyy, as a “dictator” while cozying up to the Russian president and indicating that traditional US security support for Europe is waning may have alarmed US allies abroad but has prompted a more starkly divided response among Americans at home.

Reflecting the country’s deeply partisan attitude to the new president and his “America first” foreign policy doctrine, polling suggests that Republicans are much more likely to oppose additional help for war-torn Ukraine. A Pew Research Center survey earlier this month found that 47% of Republicans but just 14% of Democrats thought the US was providing too much support to Ukraine – views that have changed dramatically since the war began three years ago, when just 7% of all American adults (9% of Republicans and 5% of Democrats) said the US was providing too much support to Ukraine.

“It is an outrageous denial of the truth and shows his allegiance to Russia and to Putin especially,” said Carla Bayles, a voter from Washington state who supported Kamala Harris in last year’s presidential election. “We are alienating our allies and getting us closer to a world war.”