KABUL, Afghanistan (AP) — An upcoming international peace conference that was meant to move Afghanistan’s warring sides to a power-sharing deal and ensure an orderly U.S. exit from the country has been postponed. The conference sponsors cited lack of prospects for meaningful progress and said no new date has been set. As peace efforts stalled, Germany’s Defense Ministry suggested NATO military planners were contemplating a possible withdrawal of international troops from Afghanistan as early as July 4. That’s more than two months ahead of the planned Sept. 11 pullout date. Wednesday’s decision came several days after Taliban insurgents dismissed the U.S.-promoted conference in Istanbul as a political spectacle serving U.S. interests.