North Korea has sent a fax to South Korea threatening to attack “without notice” in response to anti-Pyongyang rallies held on the second anniversary of Kim Jong Il's death earlier this week, South Korea’s largest news agency reported Friday. According to Yonhap news agency, the North's powerful National Defense Commission sent the message to South Korea's National Security Council through on Thursday. The youngest son of Kim Jong Il succeeded his late father in 2011, becoming the third member of his family to rule the unpredictable and reclusive communist state. NBC News was unable to independently verify the report. The...