South Korea, US prepare biggest ever military drill
Tensions have escalated since the DPRK's recent satellite launch and nuclear test. The United States has flown four F-22 fighter jets over South Korea in show of force. It's also considering the deployment of the THAAD missile defense system in South Korea.
On Thursday, a South Korean lawmaker claimed to have been told by the South Korean intelligence agency that the DPRK was preparing to carry out a "terrorist" attack.Also this week, the US and South Korea announced that this year's joint military drills would be the biggest ever.