US Undersecretary of Defense for Policy Elbridge Colby says Washington wants its Asian allies to increase defense spending to help deter regional aggression. Colby made the comments at a forum in Manila, the first stop on a tour of Southeast Asia. He said that despite the Trump administration's focus on the war in Iran, Asia remains a priority for the US. The remarks come as Washington urges allies around the world to raise defense spending and take a more active role in regional security.