Why is Mitch McConnell endorsing Trump?

Senator Mitch McConnell, retiring Senate Minority Leader, is 82. Perhaps that's why he is endorsing Donald Trump as nominee for the Republican party. Old guys stick together. It's difficult to understand what other justifiable reason he might have for supporting a man whom he denounced after the January 6 riot against the Capitol. The real reason of course is that everyone else pretty much is backing Trump within the Republican party and McConnell doesn't want to retire from his leadership role in the Senate and then be ostracised by all his peers. McConnell is staying on as a senator. The whole Republican party, apart from the so-called but uninfluential No-Trumpers, is backing Trump because he is the only who has a chance of giving them back the White House and the country, never mind what he will do once he is in the Oval Office. They don't seem to care about that. So, presumably they will back him all the way if he wins the election when he announces on day one that he is going to stop all funding and arming of Ukraine in order to bring the war to an end (in Putin's favour). According to Viktor Orban, the autocratic leader of Hungary who loves Trump, the former president is going to do just that, and he approves because the other leader he likes is Putin. And when Trump, if elected, declares an end to the war in Ukraine and signs up a delighted Putin, there is one senior Republican figure who will presumably give his blessing. None other than Mitch McConnell who until now has been a staunch friend and supporter of Ukraine. Politics is truly a cynical business.