Mattis heads to Asia to draw a contrast with assertive China

US Defense Secretary Jim Mattis on Sunday began a one-week trip to Asia, hoping to strengthen defense cooperation with Indonesia and Vietnam as regional Chinese military power looms ever larger."We share the Pacific -- it's an ocean named for peace -- we would like to see it remain peaceful, so all the nations that use it and live here are prosperous," Mattis told reporters accompanying him on a military plane headed to the region.In Jakarta, where he is to arrive Monday evening, Mattis is to me