President Donald Trump ordered a 25% tariff on steel and aluminum imports, escalating his efforts to protect politically important US industries with levies hitting some of the country’s closest allies.

According to President Sheinbaum, Mexico has cut a deal with the U.S. to delay the tariffs. Under the deal, she said Mexico is sending another 10,000 members of its national guard to the southern border to combat drug traffickers, while the U.S. has agreed to do more to prevent the trafficking of high-powered weapons to Mexico.

Trump knows the United States has more leverage over its neighbors than they do over his country. But exploiting that position of strength could cause a historic rupture.