Symbol of a Sino-American tug-of-war, TikTok once again crystallizes the tensions between digital sovereignty and trade war. With 170 million users in the United States, the ByteDance application is facing a third deadline extended by Donald Trump. By extending the deadline for the sale, the president is reviving an explosive file where geopolitical pressure, technological stakes, and legal battles are intertwined. TikTok remains at the heart of a strategic struggle, at the crossroads of economic interests and national security concerns.