The Trump administration will reimpose sanctions on Iran Tuesday, focusing on Iranian transactions involving metals like gold, steel, and graphite. The new sanctions, part of an effort to roll back the multi-nation nuclear deal that will culminate in the full reimposition of sanctions later this year, comes as the Iranian regime battles domestic unrest and protests over a struggling economy.

“What’s happening today is part of a coordinated campaign of pressuring Tehran,” said a senior administration official Monday. The U.S. government says the new sanctions are designed to deny the regime’s ability to fund terrorism abroad and other malign activity, including the pursuit of a nuclear program that violates the spirit, if not the letter, of the nuclear deal brokered by the Obama administration. The administration cited statutory authority to reimpose sanctions.