German Finance Minister Wolfgang Schaeuble warned on Tuesday that failure to win the battle against youth unemployment could tear Europe apart, and dropping the continent's welfare model in favor of tougher U.S. standards would spark a revolution. If U.S. welfare standards were introduced in Europe, "we would have revolution, not tomorrow, but on the very same day," Schaeuble told a conference in Paris. In recent weeks Germany, wary of a backlash as many in crisis-hit European countries blame it for austerity, has taken steps to tackle unemployment in the bloc, striking bilateral deals with Spain and Portugal. "We have to...