A US frigate is due to dock in Vietnam on Wednesday, becoming the first US warship to visit since the Vietnam War. The USS Vandegrift is to spend four days in port near Ho Chi Minh City, the former Saigon and a centre for US forces before they withdrew in 1973. The ship's visit is being seen as a symbolic step towards healing relations between the two countries. Diplomatic ties were re-established in 1995 and since then bi-lateral trade has been growing rapidly. "In the past, the presence of US Navy ships reflected aggression against Vietnamese. This time, it's a...