US President Donald Trump supports holding a meeting with Russian President Vladimir Putin and Chinese President Xi Jinping on the sidelines of the APEC summit, including discussing issues related to nuclear weapons, Secretary of State Marco Rubio said.

"The president wants this meeting to happen if possible. We think it should be possible and that among the topics that he believes should be discussed is the status of nuclear weapons in the world, because the president thinks their proliferation is very dangerous," Rubio said at a press conference.

Russian presidential spokesman Dmitry Peskov said earlier this week that Moscow, Beijing and Washington are exchanging views on the agenda of a possible trilateral meeting.