U.S.-China trade negotiations need to reach a successful end by March 1 or new tariffs will be imposed, U.S. Trade Representative Robert Lighthizer said on Sunday, clarifying there is a ¡°hard deadline¡± after a week of seeming confusion among President Donald Trump and his advisers.

Global markets are jittery about a collision between the world¡¯s two largest economic powers over China¡¯s huge trade surplus with the United States and U.S. claims that China is stealing intellectual property and technology.

¡°As far as I am concerned it is a hard deadline. When I talk to the president of the United States he is not talking about going beyond March,¡± Lighthizer said on the CBS show ¡°Face the Nation,¡± referring to President Donald Trump¡¯s recent decision to delay new tariffs while talks proceed.