Bloomberg -- The Trump administration will send about 1,000 more American troops to the Middle East as tensions between the U.S. and Iran continue to rise.

“I have authorized approximately 1,000 additional troops for defensive purposes to address air, naval, and ground-based threats in the Middle East,” Acting U.S. Defense Secretary Patrick Shanahan said in a statement on Monday evening. He offered no details on where the troops would be deployed or what their missions might be.

The U.S. has accused the Iranians of being behind attacks on tankers sailing near the Persian Gulf.

“The recent Iranian attacks validate the reliable, credible intelligence we have received on hostile behavior by Iranian forces and their proxy groups that threaten United States personnel and interests across the region,” Shanahan added.

“The United States does not seek conflict with Iran. The action today is being taken to ensure the safety and welfare of our military personnel working throughout the region and to protect our national interests.”