TikTok, ya don't stop: The wildly popular video app TikTok has been in the crosshairs of American lawmakers for many months now. Why? Because the app is owned by a Chinese company, raising national security concerns that it could funnel personal data on its 100 million American users to the Chinese government. The plot thickened in recent days after President Trump abruptly threatened to ban the app altogether, risking a backlash among its users and imperiling US tech giant Microsoft's efforts to buy the company's operations in the US. Canada, Australia and New Zealand. After a weekend conversation between Microsoft and the White House, the sale negotiations are back on but US lawmakers say any deal must strictly prevent American users' data from winding up in Chinese Communist Party servers. And Trump says that unless a deal is reached by September 15th, he'll go ahead with the ban. The broader fate of TikTok — which has now been banned in India, formerly its largest market, and may be broken up under US pressure — nicely illustrates the new "tech Cold War" that is emerging between China and the United States.