Again, I respectfully disagree. It's worse than comparable, the US went into Iraq knowing the consequences would be more than minimal, but Putin did this knowing full well of the consequences. The US and the UK, as well as other allies had preemptively sent in armaments and threatened reprisals. These were not just idle threats of reprisals, but threats of reprisals from the US, EU, and our allies in ANZAC, Japan, S. Korea, etc. and that's without really exercising and twisting their muscles over other countries. This is not a realpolitik rational move, or a game of pre-planned 3D chess. This is an emotional and irrational decision defying the will of the biggest economic and military powers in the world. Furthermore, you cannot underestimate some creativity and unexpected responses of purely the economic and responses alone. Putin lined up his advisors and made them pay fealty. He basically b*tch-slapped the head of the FSB live on Russian TV. It's not a rational movement, let's accept it for what it is.