North Korea repeated threats to target U.S. military bases on Tuesday as Washington and its allies tightened economic sanctions against the isolated country by targeting Pyongyang's main foreign exchange bank with new measures. The rhetoric from North Korea - which has threatened the United States with nuclear war and rehearsed drone attacks on South Korea - and Washington's hardening reaction drew more concern from China, Pyongyang's one major ally, which said the situation was "sensitive". Pyongyang says United Nations sanctions, agreed after North Korea carried out a third nuclear test in February, are part of a ... (full story)