Trump administration officials have been taking aim at China for decades, including for years with their calls to slap tariffs on Chinese goods. 

But the United States’ economic relations with the world’s second-largest economy are a much more complicated matter.

The Trump administration is the first administration to pursue trade war tactics on China, which is the world leader in manufactured goods and an important customer for the United State. 

In a statement on Tuesday, the Trump team said that “the Trump administration will be pursuing its trade war strategy against China in a number of ways.”

The move came as China has already stepped up its pressure on the United Kingdom over its decision to leave the European Union. 

Trump has also threatened to pull out of the Trans-Pacific Partnership trade deal and threatened to impose tariffs on foreign-made goods.

Trump’s trade strategy has drawn criticism from both sides of the aisle, but most Republicans in Congress are still supportive.