US and Vietnam exchange war artifacts as Hanoi agrees to open up sites to help locate troops missing in action The Vietnamese government has agreed to open three new sites for excavation by the US to search for troop remains from the war in the 1960s and 70s. The announcement came as the US defence secretary, Leon Panetta, and the Vietnam defence minister, Phuong Quang Thanh, exchanged artifacts collected during the war: letters written by a US soldier who was killed that had been kept and used as propaganda, and a diary belonging to a Vietnamese soldier. A US service member took the journal back to the US. US officials have said this is the first joint exchange of war artifacts

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