U.S. President Trump plans to meet Russian President Vladimir Putin and Chinese President Xi Jinping on the sidelines of next week’s Asia-Pacific Economic Cooperation summit in China, marking the first-ever trilateral meeting among the three leaders. Trump will also travel to the Philippines for an Association of Southeast Asian Nations summit. Nuclear weapons will be a central issue, including a potential reduction in global arsenals, while Iran is also expected to be discussed. A senior U.S. official said no agreement is expected and described the meeting as the first leader-level conversation and an entry point for future discussions. The official said Trump does not intend to discuss Ukraine. The New Strategic Arms Reduction Treaty, the last nuclear-arms pact between the United States and Russia, expired in February after a five-year extension and cannot be extended again, leaving Washington to negotiate a replacement agreement.