The probes could result in fresh tariffs on imports from 16 major trade partners, including China and the European Union.

The Trump administration announced Wednesday that it will launch a wave of tariff-related investigations into more than a dozen U.S. trade partners, the next phase in Donald Trump’s sweeping global trade wars.

In a process that is likely to result in a fresh round of tariffs in the near future, the Office of U.S. Trade Representative is opening the formal probes into major trade partners that include the European Union, Mexico and China — each of which ranks among the top five sources of U.S. imports.

Singapore, Switzerland, Norway, Indonesia, Malaysia, Cambodia, Thailand, Korea, Vietnam, Taiwan, Bangladesh, Japan and India will also be the targets of investigations under the trade statute known as Section 301.