Putin will not talk to Obama under pressure,” American journalist Josh Rogin was told late last week by a close associate of Russian Prime Minister Dmitry Medvedev. If Russia’s President will no longer call or accept calls from the President Obama, this strikes me as the most important casualty so far from U.S.-provoked “regime change” in Ukraine. Barack Obama and Vladimir Putin apparently had conversations on Ukraine almost every week in March; their last talk took place on April 14.

U.S. “pressure” – including token economic and travel sanctions against some Russian companies and friends of Putin – is likely to continue.