Glenn Reynolds:

That departure made some sense. Back in February, Biden seemed to grant Vladimir Putin a green light to invade Ukraine. White House spokesmen quickly walked that back, but the green light, coming directly from Biden’s lips, apparently convinced Putin that he could launch an invasion without blowback.

That turned out to be wrong, of course, and now the United States is involved in a proxy war with Russia, while sanctions and export disruptions cause the world’s food and fuel markets to go crazy and have Europe looking at a long, cold winter of gas shortages and electrical blackouts. So firmness, this time.