"Let's conclude a peace treaty before the end of this year, without any preconditions".
The Soviet Union seized the four islands north of Hokkaido and east of Sakhalin in the closing days of World War II.
It is reported by the Chronicle.info with reference to Capital.
Prime Minister Abe and the Japanese government have recently made a positive gesture toward the ties with China, said the Chinese president.
This year marks the 40th anniversary of the signing of the China-Japan Treaty of Peace and Friendship. However, since any significant progress in this direction was not done.
The disputed islands, known as the Southern Kurils in Russian Federation and the Northern Territories in Japan, were seized by the Soviet Union in 1945 in the closing stages of World War II.
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The forum under the slogan "The Russian Far East: Expanding the Range of Possibilities", is being held in Vladivostok with Japanese Prime Minister Shinzo Abe also attending.
Russian President Vladimir Putin, right, gestures as he and Chinese President Xi Jinping select food, as they visit an exhibition during the Eastern Economic Forum in Vladivostok, Russia, Tuesday, Sept. 11, 2018.
Abe said he and Putin approved a "road map" to realize the activities on the islets in five areas - aquaculture, greenhouse farming, tourism, wind power and waste reduction - which they agreed on past year.
Chinese leader Xi Jinping was challenged to show his cooking skills by host Vladimir Putin, when the Russian president invited his guest to try a traditional dish: pancake with caviar chased down with a shot of vodka.
Abe also said he and Xi shared the view that Japan and China bore responsibility for world peace and prosperity, as well as the goal of achieving North Korea's denuclearization.
The friendly exchanges between the two countries' youths will further consolidate the foundation of bilateral ties and are crucial to the future of Russia-China relations, he said. "Putin does not expect anything", Georgy Kunadze, a former Russian deputy foreign minister, told AFP news agency, adding that Abe would never accept a deal that would be political suicide for him.