The Vietnamese don’t hope for anything from Barak Hussein. They know who and what he is. They, however, do desire to maintain whatever links they can and keep offers on the table, like Cam Ranh, so that they are all still there when and if the regime in America changes. China is the overriding concern. It is the great Disease from the North that is infecting all the sealanes and threatening real hegemony for Southeast Asia. Viet Nam is taking aid, military especially, from wherever they can get it. If China makes a move to seal off Viet Nam or even invade it again, Viet Nam will not be any easy thing and Viet Nam is doing everything it can to ensure that it is too expensive a prize to contemplate for the Chinese.
Except many in the VN military and intelligence have strong links with China. The people don’t like Chinese aggression but when has Hanoi has ever had the guts to halt Chinese advances over the islands?