Xi to attend Russia summit, North Korea's Kim invited

Russian President Vladimir Putin has invited Kim to participate in the September 11-13 Eastern Economic Forum in Vladivostok.

Kim has not confirmed his attendance, but his participation would mark another major step in his efforts to bring Pyongyang out of international isolation over its nuclear weapons programme.

At a press briefing to announce Xi's visit, Chinese officials would not comment on whether Xi planned to meet with other leaders during the summit.

"Should we have any proposals from other countries, China will positively consider" them, assistant foreign minister Zhang Hanhui told reporters.

Kim and Xi met three times in China this year as the two countries seek to repair relations frayed by North Korea's nuclear activities and Beijing's backing of United Nations sanctions against its Cold War-era ally.

Xi is sending the head of China's rubber-stamp legislature, Li Zhanshu, to Pyongyang this weekend to attend celebrations marking North Korea's 70th anniversary, ending speculation that the Chinese president would use the occasion to make his first official trip to the neighbouring country.

In the latest chapter in the roller-coaster diplomacy over North Korea, US President Donald Trump signalled on Thursday that negotiations on denuclearisation remain alive after weeks of an apparent deadlock.

Xi will be in Vladivostok on Tuesday and Wednesday. It will be the first time that a Chinese leader participates in the annual economic forum hosted by Russia.

Japanese Prime Minister Shinzo Abe and South Korean premier Lee Nak-yeon are expected to attend the summit.

Relations between China and Japan soured in 2012 over a territorial dispute, but have begun to warm.

In recent months, the two sides have been negotiating an exchange of top level visits.