UNITED NATIONS - Rwanda's foreign minister on Sunday questioned whether world leaders would ever make good on new promise to act in times of genocide like the one that devastated his nation 11 years ago. One of the most lauded elements of a document that came out of a three-day summit that ended Friday was world leaders' recognition of a collective responsibility to protect people from genocide, war crimes and ethnic cleansing. Rwanda's Foreign Minister, Charles Murigande, told the annual U.N. General Assembly debate that his country would wait to declare that responsibility a success until nations again confront such...