Most South Koreans who had remained at an industrial park in North Korea had returned home by early Tuesday morning, officials said, leaving a final seven behind to negotiate unpaid wages for North Korean workers. 
 
 Medias wait for South Koreans returning home from North Korea's Kaesong at the customs, immigration and quarantine office near the border village of Panmunjom, that separates the two Koreas, in Paju,... (Associated Press) 
 
 South Korean vehicles returning home from North Korea's Kaesong arrive at the customs, immigration and quarantine office near the border village of Panmunjom, that has separated the two Koreas since the... (Associated Press) 
 
 South Korean vehicles returning home from North Korea's Kaesong arrive at the customs, immigration and quarantine office near the border village of Panmunjom, that has separated the two Koreas since the... (Associated Press) 
 
 A South Korean worker unloads goods from his vehicle to reload them to another upon arrival from North Korea's Kaesong city at the customs, immigration and quarantine office near the border village of... (Associated Press) 
 
 A South Korean vehicle fully loaded with goods and products brought back from North Korea's Kaesong industrial complex arrives at the customs, immigration and quarantine office near the border village... (Associated Press) 
 
 South Korean workers unload goods from their ambulance to reload them to another vehicle upon arrival from North Korea's Kaesong city at the customs, immigration and quarantine office near the border... (Associated Press) 
 
 The Unification Ministry in Seoul said 43 South Koreans began departing from Kaesong late Monday night and arrived in the South just past midnight after officials arranged vehicles to carry them across the border. 
 
 But it wasn't immediately known when the wage negotiations would take place and the remaining seven South Koreans would return home. 
 
 The departure of the last South Koreans would empty out the jointly run complex, located just across the border in the North Korean town of Kaesong, for the first time since it opened in 2004 and possibly lead to the permanent closure of the last symbol of inter-Korean cooperation. 
 
 Amid high tensions, North Korea suspended operations at Kaesong in early April, withdrawing all of its 53,000 workers and barring South Korean factory managers and trucks with supplies from entering the complex. It was the most significant action taken by North Korea as it sought to show its anger over South Korean-U.S. military drills and U.N. sanctions imposed over Pyongyang's February nuclear test, its third. 
 
 North Korea's accompanying torrent of warlike rhetoric included threats to launch nuclear strikes on the U.S., although it has recently shown some tentative signs of willingness to talk. 
 
 The U.S.-South Korean drills, which North Korea calls war preparations, ended Tuesday, the United States Forces Korea said. 
 
 Kurt Campbell, the former top U.S. diplomat for Asia, told reporters at a forum in Seoul that there was substantial concern with the way Pyongyang has treated what was supposed to be a venue to improve inter-Korean relations. 
 
 But he said what has happened at Kaesong wasn't a watershed moment like the shelling of a front-line South Korean island or the sinking of a South Korean warship, two attacks that killed 50 South Koreans in 2010. Pyongyang denies involvement in the sinking. 
 
 South Korea began withdrawing its remaining nationals from Kaesong on Saturday, citing a shortage of food and medicine for them, after North Korea rejected an offer to hold talks on the complex. 
 
 Kaesong, which combines South Korean knowhow and technology with cheap North Korean labor, is the last remaining cooperation project between the Koreas. The Korean Peninsula officially remains at war because the 1950-53 Korean War ended with an armistice, not a peace treaty. 
 
 Other collaborative programs, including tours from South Korea to a scenic North Korean mountain, have been stalled in recent years because of confrontation between the rival Koreas. 
 
 A group of businessmen with factories in Kaesong sought to visit North Korea on Tuesday but could not because Pyongyang didn't approve the trip, the Unification Ministry said. 
 
 __ 
 
 Hyung-jin Kim reported from Seoul. AP writers Sam Kim and Foster Klug contributed to this report from Seoul. 

 US and South Korea wrap up "Foal Eagle" military drills 
 
 Around 10,000 US ground, air and naval troops have been involved in the military drills 
 
 The US and South Korea have wrapped up joint military drills that took place amid high tensions with North Korea. 
 
 Pyongyang has been angered by the two-month annual exercise, known as "Foal Eagle", which began shortly after its third nuclear test in February. 
 
 Meanwhile, seven South Korean workers have remained in a joint industrial zone in North Korea. 
 
 Administrative details had delayed their departure from the Kaesong complex, officials said. 
 
 'Attack rehearsals' 
 
 "Foal Eagle" involved around 10,000 US troops and their South Korean counterparts. The drills were thought to include ground, air, naval, expeditionary and special operations training exercises. 
 
 "The drill is over but the South Korean and US militaries will continue to watch out for potential provocations by the North, including a missile launch," South Korea's defence ministry spokesman Kim Min-seok told reporters. 
 
 Continue reading the main story Timeline: Korean tensions 12 Dec: North launches a rocket, claiming to have put a satellite into orbit 
 
 North launches a rocket, claiming to have put a satellite into orbit 12 Feb: North conducts underground nuclear test 
 
 North conducts underground nuclear test 11 Mar : US-South Korea annual military drills begin 
 
 : US-South Korea annual military drills begin 30 Mar: North says it is entering a "state of war" with South 
 
 North says it is entering a "state of war" with South 2 Apr: North says it is restarting Yongbyon reactor 
 
 North says it is restarting Yongbyon reactor 3 Apr: North blocks South workers from Kaesong industrial zone, then on 9 Apr pulls its workers out 
 
 North blocks South workers from Kaesong industrial zone, then on 9 Apr pulls its workers out 10 Apr: North moves two mid-range Musudan missiles to its east coast 
 
 North moves two mid-range Musudan missiles to its east coast 26 Apr: Seoul announces withdrawal of all remaining South Korean workers from Kaesong 
 
 "We consider the exercise had made a great outcome. Also this training was led by South Korean military, so it was a good chance to examine South Korean army's capability," he added. 
 
 As part of the exercise, and amid a series of threats from Pyongyang, the US flew two B-2 stealth bombers, and two B-52 nuclear capable bombers, over South Korea, prompting an angry response from the North. 
 
 On Monday, North Korea's Rodong Sinmun newspaper described the military drills as "attack rehearsals" that were "driving the situation of the Korean Peninsula to a nuclear war". 
 
 The United States Forces Korea described the annual drills as "designed to improve the alliance's readiness to defend the Republic of Korea". 
 
 Return delayed 
 
 Meanwhile, South Korea says all but seven of its workers have returned from the Kaesong industrial zone in North Korea. 
 
 The remaining workers were negotiating unpaid wages, corporate taxes and communications charges with the North, South Korean news agency Yonhap reported on Tuesday, citing an unnamed official. 
 
 "The entire process should not take much time, but the seven people will probably not be able to return during the day," the official said. 
 
 South Korean workers have not fully withdrawn from the zone before. Launched in 2003 to boost inter-Korean ties, Kaesong is seen as a key indicator of North-South relations. 
 
 Earlier this month, North Korea blocked South Korean workers from entering the jointly-run complex, where 123 South Korean firms are based. North Korea withdrew its 53,000 workers a few days later. 
 
 On Friday, South Korea announced that it too was withdrawing all of its workers, after the North rejected its offer for talks on the zone. 
 
 Pyongyang has been angered by tightened UN sanctions imposed after its 12 February nuclear test, as well as the "Foal Eagle" drills. 
 
 In recent weeks, it has threatened to attack South Korea, Japan and US bases in the region, vowed to restart an inactive nuclear reactor and shut an emergency military hotline with South Korea.
– The US and South Korea have finished up their yearly joint military drills—or, as the North calls them, "attack rehearsals"—that have been going on since February. The "Foal Eagle" drills, which involved some 10,000 US troops, are "over, but the South Korean and US militaries will continue to watch out for potential provocations by the North, including a missile launch," says a rep for South Korea's defense ministry, citing a "great outcome" for the drills. "This training was led by South Korean military, so it was a good chance to examine [the] South Korean army's capability," the spokesman said. The North, however, decried the drills as "driving the situation of the Korean Peninsula to a nuclear war," the BBC reports. In other news from the region, just seven South Korean workers remain at the Kaesong Industrial Complex; they're negotiating North Korean workers' unpaid wages, the AP reports.