BEIJING - Soldiers on foot and in armored carriers swarmed Tibet's capital Saturday, enforcing a strict curfew a day after protesters burned shops and cars to vent their anger against Chinese rule. In another western city, police clashed with hundreds of Buddhist monks leading a sympathy demonstration. The violence erupted just two weeks before China's Summer Olympic celebrations kick off with the start of the torch relay, which passes through Tibet. China is gambling that its crackdown will not draw an international outcry over human rights violations that could lead to boycotts of the Olympics. Secretary of State Condoleezza Rice called on China "to exercise restraint in dealing with these protests," while the State Department issued a travel alert for Americans in the region. Her statement also called for China to release monks and others jailed for protesting.