Vice President JD Vance sought to provide assurances on Monday that President Donald Trump’s newest Iran deal will effectively target the regime’s nuclear program. 

Iran’s nuclear ambitions have been touted by officials as one of the top reasons why the United States launched strikes against the country on Feb. 28, and have been the top hurdle in negotiations to wind down the conflict. A “memorandum of understanding” resolving tensions between the two countries was reached over the weekend, but bipartisan concerns remain that Trump’s new deal could lack sufficient enforcement mechanisms to keep Iran from enriching uranium and building nuclear weapons.