As we know, Putin used “little green men” to take the aptly-named Crimea in 2014. He earned wild popularity in Russia as a result. As a symbol of the strength of his (and his country’s) commitment to Crimea, he then spent billions of rubles to build a bridge over the Kerch Strait to the Russian mainland. He is now using Russian control of both sides of the strait to essentially blockade a substantial portion of Ukraine.
The bridge is a sitting duck. If you ran Ukraine, wouldn’t you seriously consider sending some of your own little green men to blow it up? Wouldn’t that really piss Putin off?
After all, if the shoe were on the other foot, don’t you think he would do it?