WASHINGTON (AP) — President Joe Biden will aim to assert America’s global leadership during his upcoming trip to Southeast Asia that will be shadowed by a verdict on his presidency after Tuesday’s elections. The foreign policy challenges that have helped define Biden’s first two years in office -– Russia’s invasion of Ukraine and the increasing influence of China -– will be on full display at a pair of summits in the region. Biden is preparing for a potential one-on-one meeting with a newly empowered Xi Jinping, who last month won an custom-shattering third term as China's Community Party leader.