Undeterred in the game of punitive sanctions, Russia started its own tit-for-tat measures, banning British flights to and over its territory in retaliation to a similar U.K. ban on Aeroflot flights.

The EU’s unanimous decision, part of a broader sanctions package, indicated that Western powers are moving toward unprecedented measures to try to force Putin to stop the brutal invasion of Russia’s neighbor and from unleashing a major war in Europe.

Austrian Foreign Minister Alexander Schallenberg said the move would be “a unique step in history toward a nuclear power, a country that has a permanent seat on the Security Council, but also shows … how united we are.” It was unclear what the practical impact on the two men would be and how important their assets in the EU were.

“I can assure you that if you got major assets and all of a sudden you can’t get hold of them, it will cost you,” said EU foreign affairs chief Josep Borrell. He did not provide details.

An equally big move would be to ban Putin and Lavrov from EU travel. But overnight, EU leaders made it clear that would be off the table for now, if only since it might complicate diplomatic moves once all sides get around the negotiating table.

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