Why does Senator Schumer believe appeasement of Putin could be dangerous for America?

Senator Schumer warns that giving in to Putin now means America will inevitably pay a higher price later, citing historical lessons that appeasing dictators and thugs leads to greater consequences. He emphasizes that the Ukraine conflict isn't merely about another nation's security, but fundamentally concerns American security as well. According to Schumer, the struggle represents a broader conflict between democracy and autocracy, with significant implications for global stability and U.S. interests. He urges Republicans to reject Trump's rhetoric, which he claims aligns with Russian propaganda and undermines democratic values.