SANTIAGO, Chile - President Bush said Saturday that North Korea "will hear a common voice from the world" demanding it stop its nuclear weapons program.

Bush, in Chile at a weekend economic summit with Pacific Rim leaders, reiterated that multiparty talks are the only way the United States will deal with North Korea on the weapons issue.

Bush also addressed the alleged nuclear ambitions in Iran, which is producing significant quantities of a gas that can be used to make nuclear arms. While Iran says it is only interested in generating power, the United States and its allies accuse Tehran of wanting technology to make weapons-grade uranium.

Bush lauded the efforts of European nations involved in diplomacy to persuade Iran not to pursue nuclear weapons.

Iran last week agreed to suspend uranium enrichment and all linked activities in a deal worked out with Britain, France, Germany and the European Union. The deal, which goes into force Monday, prohibits Iran from all uranium gas-processing activities, as well as other programs linked to enrichment.

Iran's decision to carry out uranium processing right up to the freeze deadline disappointed the Europeans and cast doubt on Tehran's goodwill.

Bush was also meeting with the leaders of Indonesia and Canada, part of a nearly 15-hour diplomatic whirlwind Saturday that would have the president covering a range of issues: an ongoing currency dispute with China, the status of military ties with Indonesia, bolstering relations with Canada and Russia's apparent pursuit of a new nuclear missile among them.

Later Saturday, Bush's attendance at official sessions of the annual 21-nation Asia-Pacific Economic Cooperation forum and a speech before regional business executives would provide a platform for his other agenda items for the weekend: enhanced anti-terror measures and freer trade.

The president planned to trumpet the APEC members' agreement on new counterterrorism measures on everything from air travel to shipping and food stocks.