Earlier quoted context omitted.
Suicidal for whom?
Russia. I don't see how anyone can see the massive losses Russia has had as well as the lasting impacts of sanctions as anything but suicidal. Russia cannot even build a modern car with ABS and airbags, let alone a plane or a tank while sanctions are in place.
With Bush's invasion of Iraq, he ran the risk of losing the 2004 reelection. Putin doesn't even face that risk.