Beijing and Hanoi have tangled before.
Despite Beijing's proclamations, ASEAN unity is still relatively intact.
Vietnamese hoping he'd bring change were disappointed.
"Washington needs to think much more broadly and long-term about the value of the U.S.-Thai alliance."
There are many reasons to be cautiously optimistic vis-à-vis the possibility that this year could mark a diplomatic milestone in the South China Sea disputes. Can ASEAN and China find common ground?
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