Russia will never start an open war with the UK or any EU country. They can barely handle Ukraine imagine that plus any other country.

Ukraine is the biggest country on European continent. It has the most capable military in Europe right now. And it's backed by Europe economically. Saying that Russia can't defeat them is not the insult you think it is. If Russia mobilized 1M people and went full on war in a month, they'd easily take over the Baltics, took half of Poland and bombed the F out of Germany and France. They'd lose eventually if Europe woke up from its delusions, but they definitely can take over most of Eastern Europe.

"Russia will never start an open war with Ukraine"

Was the common talking point even in early february of 2022

If it were only the Ukraine the war would have long been over. The West block has supplied more than $500 billion in aid to the Ukraine, that's more than twice the US lend/lease to the Soviet Union in 2026 dollars. Plus intelligence information and probably other things I'm forgetting. The more dollars are sent to Kiev, the more blood and lives the Ukrainians are expected to invest. That's the deal.