South Korea and the US wrapped up their annual large-scale military drills today, but continued a separate joint naval exercise that has triggered dire threats from North Korea. <br/><br/>Tensions on the Korean peninsula have been running sky high for weeks, with signs that the North might be preparing a long-range missile launch or a sixth nuclear test and with Washington refusing to rule out a military strike in response. <br/><br/>The massive "Foal Eagle" drill, ended as scheduled and it involved around 20,000 South Korean and 10,000 US troops.<br/><br/>Another annual joint exercise known as Key Resolve ended last month. Both play out scenarios for a conflict with North Korea, but Seoul and Washington insist they are purely defensive in nature, despite Pyongyang's claims that they are provocative rehearsals for invasion.