President Joe Biden has allowed Russian President Vladimir Putin to intimidate him into withholding key military assistance from Ukraine, according to a senior House Democrat.

“We should be more aggressive about what we’re giving them,” House Armed Services Chairman Adam Smith (D-WA) said Wednesday during a Center for New American Security event. “I don’t agree with the president on the notion that we shouldn’t give them long-range strike missiles, because I think he’s sort of buying into Putin’s rhetoric here.”