change of mind (esp. regarding one’s beliefs, causes, or policies) n.: bouleversement
The timing of this week’s bouleversement [by British Prime Minister Tony Blair] in Brussels was rotten. It is less than a month since [Blair] decided to break cover, launch his “national changeover plan,” and make it plain to anyone who had ever doubted it that he really did intend to lead Britain into the promised land of the euro, the single European currency. (Economist, “Moses Blair and His Promised Euroland,” 3/20/1999.)
