Despite the trauma of war between the two nations, the United States and Vietnam have sharply expanded cooperation since the reestablishment of relations 30 years ago.
Vietnam has historic tensions with China including disputes in the South China Sea, where Beijing has increasingly exerted claims against Hanoi, the Philippines and others.
I doubt it. Vietnam came first and foremost, if partnering with the US protects them from China, so be it. He’d see the practicality of such an arrangement.