President Bush plans to meet Sunday with the leaders of China and Russia as he continues his campaign for a strong international stand against North Korea's nuclear program.
Mr. Bush is scheduled to hold talks with Chinese President Hu Jintao and Russian President Vladimir Putin on the sidelines of the APEC summit in Hanoi.
The American president held talks Saturday with Japanese Prime Minister Shinzo Abe. Mr. Bush said afterwards that both nations are committed to ensuring that the six-party talks on North Korea's nuclear program succeed.
Also Saturday, South Korean President Roh Moo-hyun told Mr. Bush that South Korea supports the basic aspects of a U.N. resolution that imposes sanctions on North Korea for failing to abandon its nuclear program. But he said Seoul will not participate in a U.S.-backed plan (known as the Proliferation Security Initiative) to intercept North Korean ships suspected of carrying missile or nuclear equipment and technology.
The United States, China, Russia, Japan and the two Koreas are involved in the six-party talks on North Korea.
National Security Advisor Stephen Hadley says the APEC summit will issue a joint statement Sunday on North Korea's nuclear ambitions.
President Bush's visit to Vietnam is part of a six-day, three-nation tour of Southeast Asia. He arrived in Vietnam Friday from Singapore. He plans to visit Indonesia before returning to the United States on Tuesday.