Recently, diplomatic contacts between the US and Vietnam have intensified. The US views Vietnam as a key ally in countering China, offering economic and military support through the elevation of a strategic partnership. However, Vietnam is cautious about cooperating with the US due to concerns about China's economic influence and military pressure. What does this active courtship mean for Vietnam? How will the changing relationship between the US and Vietnam affect the future of East Asian geopolitics? What military support did the US promise to Vietnam in this meeting? How can Vietnam address concerns about China's economic retaliation? Amidst these circumstances, what diplomatic choices will Vietnam make? These questions are growing in importance.