Story highlights It was the first time leaders of the three countries had met in three years

The summit covered contentious wartime history, denuclearizing North Korea and trade agreements

Park and Abe vow to speed up talks to resolve the issues over former WWII comfort women

(CNN) China, Japan and South Korea said they have "completely restored" relations after meeting Sunday for the first trilateral summit of the East Asian powers in three years.

Chinese Premier Li Keqiang met with Japanese Prime Minister Shinzo Abe and South Korean President Park Geun-hye over the weekend to discuss their contentious WWII wartime history , trade agreements and defusing the North Korea nuclear threat.

"All sides shared the view that trilateral cooperation has been completely restored in this meeting," Park said.

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The meetings, originally held annually, were put on hold in 2012, as relations with Japan, especially over the issue of comfort women , strained.

The meeting was the sixth trilateral summit between the three countries since it kicked off in 2008.

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