Republicans are slamming UK Foreign Secretary David Cameron for his 'immature' comparison of GOP lawmakers against sending more aid to Ukraine to the 'weak' appeasement of Hitler in the 1930s.

David Cameron implored Republicans not to obstruct additional military aid packages for Ukraine, equating such a move to the appeasement of Hitler prior to the invasion of Poland that triggered World War II. 

The Senate approved a $95 billion foreign aid package that will send over $60 billion to Ukraine and $14 billion to Israel. However, it faces an uncertain future in the House after Speaker Mike Johnson said he does not plan to bring it to the floor for a vote.

The former UK prime minister called out the GOP in a sensational op-ed in the Hill saying 'I do not want us to show the weakness displayed against Hitler in the 1930s.'

Republicans fired back at the foreign secretary, saying the UK hasn't paid its fair share in aiding Ukraine in its fight against Russia anyway. U.S. taxpayers have already sent an estimated $113 billion since the start of the conflict two years ago. 

'That's hilarious. David Cameron can kiss my a**' Greene, who is against sending additional funds to Ukraine, told DailyMail.com in reaction.

Rep. Andy Biggs, R-Ariz., called Cameron's statement 'laughable' adding that he has 'rich disdain for such an immature opinion.'

Republicans opposed to sending more aid to Ukraine are worried about signing off on a 'blank check' with no clear benchmarks for ending the war. 

Republican Mike Waltz, R-Fla., told DailyMail.com that it would be 'nice' if 'our British friends paid more attention to demanding that the rest of Europe contribute their fair share rather than demanding the United States sign a blank check.'