They have always been cowards and let others do the fighting for them. They say a lot if it benefits them.
Sell them arms.
Get NATO vasals to also buy more arms.
Make Russia spend money on the war.

Anyone who isn’t stupid knows they could never guarantee protection.
Except mercs and ‘advisors’ they will not and can not set one foot on ukrainian soil.
Russia says it is a red line and despite being wildly irresponsible the US won’t cause WW3 just yet.