Several thousand South Korean and U.S. troops took part in joint live-fire exercises on Thursday, in a show of force after North Korea's failed attempt last month to launch a spy satellite.
The drills, overseen by South Korean President Yoon Suk Yeol, are also being held to mark the 70th anniversary of the alliance between the countries and the 75th anniversary of the founding of the South Korean military. The initial phase of the drills were designed to show a response to North Korea's nuclear and missile threats and a full-scale attack.
Later in the programme, allied troops prepared the ground for a counterattack through air and artillery precision strikes on key targets. North Korea has previously reacted angrily to the allies' military drills, calling them a rehearsal for its invasion. The United States has about 28,500 troops in South Korea.