So basically "Putin bad man, must not let him win".
How does Putin spread influence westward thru NATO? That's BS propaganda, there are existing treaty terms that prevent it.
Russia is a big country with tons of nukes, but in terms of their economic strength they are nothing to be concerned about. Its meaningless for us to let them go from the GDP of FL to the GDP of TX. Not at all worth 100s of billions and 100s thousands of lives.
IF we weren't on an unsustainable fiscal path with debilitating debt, perhaps your arguement may be arguable. BUT as it stands now, we have no business wasting what you call "pennies"....$200B will fast approach $1T+.
Your exact same arguements were used for Iraq and Afghanistan. Weaken our enemy, punish bad actors, don't let their influence and power grow.
But thanks for answering....