Frontsight wrote:Should the US intervene if Russia/Belarus invades Ukraine?1
You mean, again? More than it currently has? Between Crimea and eastern Ukraine, Russia's had a solid occupation on for seven years now. Russia has been carving Russian-speaking enclaves out of former SSRs since Moldova.
Budapest Agreement notwithstanding, it would require significant Turkish support to reinforce Ukraine in any meaningful way, and Putin realized early on that Erdogan was a fulcrum with which western opposition could be split, so long as he had a lever of sufficient length. He's been levering for years now. Otherwise you're going through Romania or Poland, and Poland hasn't had the best relations with Ukraine over the past century. That said, they're both EU and NATO.
Putin isn't going to grab more of Ukraine. He's got plenty to consolidate as it is.