The new Saudi king will use his first official visit to the White House this week to make clear that his country’s lukewarm support for the nuclear deal with Iran comes with strings attached.

King Salman bin Abdul-Aziz Al Saud’s three-day visit, strategically scheduled just days before Congress votes on the agreement, offers the Saudi leader a powerful platform to insist that the United States help combat Iranian “mischief.” The king is seeking assurances in the fight against Iran’s proxies across the region, as well as with elements of the nuclear deal itself.

The visit “underscores the importance of the strategic partnership between the United States and Saudi Arabia,” White House spokesman Josh Earnest said Aug. 27.

“The president and the king will discuss a range of issues and focus on ways to further strengthen the bilateral relationship, including our joint security and counterterrorism efforts,” Earnest said. “They will also discuss regional topics, including the conflicts in Yemen and Syria, and steps to counter Iran’s destabilizing activities in the region.”