US drills in South Korea trigger 'nuclear war' warning from North

US drills in South Korea trigger 'nuclear war' warning from North  NBCNews.com US, South Korea begin air combat drills that include simulated strikes on North Korea  Washington Post Hundreds of US, South Korean aircraft begin massive drill in Korean Peninsula  USA TODAY President may use North Korea as his Trump card if Flynn's flip threatens his precious well-being  New York Daily News US masses stealth jets in South Korea for war games  CNNFull coverage