FDR had his share of isolationists and Nazi lovers in Congress which is one reason he created Lend/Lease. When they stopped him from shipping aid directly, he sent it to Canada and trans-shipped to Britain.

We abandoned the Kurds. We abandoned Afghanistan. If we abandon Ukraine in the middle of a fight, what kind of message does that send to Taiwan, China and the rest of the world?

Our largest challenge is to remember history.