Biden is the best thing to happen to Putin in years, why would they want to do anything to endanger him?
Ooohhhhh, send Biden to "visit" the front lines in Ukraine. Putin will order a cease fire so as not to damage his valuable asset. Leave Joe there as long as possible to extend said cease fire. Tour him around the different fronts. Lather, rinse, repeat until 2024 and we vote in someone with a back bone.