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BEIJING — The leaders of China and South Korea called for North Korea to resume negotiations on its nuclear disarmament after a meeting Thursday in which they discussed ways to draw their isolated and erratic neighbor back into dialogue with the outside world.
The summit in Beijing marked the beginning of a four-day visit by South Korea’s new president, Park Geun-hye. It also comes at a time when China, Pyongyang’s biggest ally and longtime benefactor, has signaled unusual displeasure with the North after it recently carried out a missile launch and nuclear test and issued a barrage of provocative rhetoric despite Beijing’s protests.
‘‘We shared an understanding that North Korea’s possession of nuclear weapons cannot be tolerated under any circumstances,’’ Park said at a joint news conference.