Craig Murray has an essay where he apologizes for being wrong on Ukraine for just this reason.

The genocide in Gaza – or more precisely the major NATO powers’ active and practical support for the genocide in Gaza – has forced me to re-evaluate my views on Ukraine in a manner more sympathetic to the Russian narrative.

In particular, I was complacent in my dismissive attitude to the argument that the Western powers would back ethnic cleansing and massacre in the Donbass, by forces including some motivated by Nazi ideology. The same powers who are funding and arming Ukraine are funding and arming a genocide by racial supremacist Israeli forces in Gaza. It is beyond argument that my belief in some kind of inherent decency in the Western political Establishment was naive.

I apologise.

. . .

The suppression of the Russian language, of Russian Orthodox religion and of the main pro-Russian opposition political party in Ukraine are simple facts. These I have always acknowledged: until I saw the positive enthusiasm of leaders of the Western states for massacre in Gaza, I was not convinced they could not have been addressed by diplomacy and negotiation. I now have to reassess that view in the light of new information, and I now think Putin was justified in the invasion.