Stock index futures traded sharply lower on Monday, as President Donald Trump threatened an extra 10% tariff for countries aligning with the 'Anti-American policies of BRICS.' S&P 500 futures (SPX) -0.

What level of tariffs will the U.S. impose on imports and when? Stock futures were falling early Monday as markets were roiled by threats of new levies but also confusion over the deadline for the proposed duties.

U.S. stocks are lower in early trading Monday as the Trump administration steps up pressure on trading partners to make deals before a Wednesday deadline. The S&P 500 was 0.3% lower as trading resumed in the U.

The United States is close to finalizing several trade agreements in the coming days and will notify other countries of higher tariff rates by July 9, U.S. President Donald Trump said on Sunday, with the higher rates scheduled to take effect on August 1.