The stock market is waiting anxiously for the next move on tariffs as China’s retaliation to levies from the U.S. has put markets on edge amid fears of an escalating tit-for-tat trade war between the two powers.

U.S. futures and global stocks were hit by a selloff early on Monday as markets around the world braced for a potential trade war triggered by President Donald Trump’s decision to impose sweeping tariffs on imports from Canada, Mexico, and China—which warned of “necessary countermeasures.”

Stock futures are mixed this morning, as traders react to responses from China, Canada, and Mexico regarding tariffs