But considering the rising inflation and political uncertainty at home, Bruce Stokes, Visiting Senior Fellow at the German Marshall Fund of the United States, said the European experts he has spoken with are worried that both American and European resolve to support Ukraine will eventually waver.
Polling data from the Morning Consult suggests that American support for financial assistance to Ukraine has already atrophied.
Some 86% of American voters are at least somewhat concerned about Russia's invasion of Ukraine, according to the Russia-Ukraine Crisis Tracker.
While 55% of Democrats support it, only 39% of Republicans support sanctions regardless of the rising prices of goods.
And while 55% of Democrats support sanctions despite rising gas prices, just 42% of Republicans feel the same way.
Despite his public statements, the share of Republican voters who say the United States is doing "too much" to halt Russia's invasion of Ukraine has increased, from 13% in March to 23% in the latest survey.
And while it received unanimous support from Democrats, 57 Republicans in the House and 11 in the Senate voted against the Additional Ukraine Supplemental Appropriations Act in May, which eventually passed, to deliver $40 billion in aid to Ukraine.
Citing public opinion data from the U.S., Stokes said, "there is evidence that a portion of the American public is saying, 'we support what we are doing in Ukraine,' but there's also some hesitancy emerging about how much more we should do.".
Stokes said these intensifying attacks from some Republicans, combined with low approval ratings and rising inflation, bring uncertainty to Biden's foreign policy strategy in the future
"What Europeans fear is that America will one day say, 'The war is over, we are going to pivot back to Asia, this is your problem, and go rebuild Ukraine,''' he said
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