Days after Kim Jong Un's 'guided missile' launch, the South Korean military shoots warning shots at a North Korean patrol boat.

South Korea's military has fired warning shots towards a North Korean patrol vessel during heightened tensions over Kim Jong Un's latest missile test. The North Korean boat was targeted by its neighbour's forces after temporarily crossing the countries' disputed western sea boundary, which was drawn up by the UN after the Korean War in 1953. As the South's high-speed vessel responded to the incident, poor visibility caused it to collide with the fishing boat, which saw some troops on board suffer minor injuries. South Korea has been staging major joint military years with the US in recent weeks to deter its neighbour from its increasingly provocative weapons testing programme. Previous clashes at sea included a deadly incident in 2010, when the South blamed the North for an attack on a warship that killed 46 soldiers.