U.S. President Donald Trump told Israeli Prime Minister Benjamin Netanyahu during a December meeting at Mar-a-Lago that he would back Israeli strikes on Iran’s ballistic missile infrastructure if Washington and Tehran failed to secure a diplomatic agreement, according to two sources familiar with the discussion who spoke to CBS News on condition of anonymity.

Roughly two months later, senior officials within the U.S. military and intelligence community have begun internal deliberations over how Washington might support a new wave of Israeli action against Iran, the report said. According to two other U.S. officials briefed on the matter, discussions have centered less on whether Israel has the capability to strike and more on the mechanics of potential American assistance.

Among the options under consideration are providing aerial refueling for Israeli aircraft and navigating the politically fraught issue of securing overflight rights from countries along the potential flight path. It remains unclear which nations, if any, would authorize the use of their airspace for such an operation. Jordan, Saudi Arabia and the United Arab Emirates have all publicly stated they would not permit their territory to be used for strikes on Iran or for Iranian attacks against other states.

The developments come as the Trump administration continues to pursue negotiations with Tehran over its nuclear program. Netanyahu has remained openly doubtful about the prospects for diplomacy and traveled to Washington last Wednesday for talks with Trump. In a series of public statements, the Israeli leader insisted that any agreement with Iran must go beyond nuclear constraints to include limits on Tehran’s ballistic missile program and its financial support for regional proxy groups.

Iranian officials, for their part, have indicated a conditional readiness to scale back certain uranium enrichment activities in exchange for relief from sweeping economic sanctions. However, the contours of such an arrangement remain undefined, and the talks have yet to yield a written framework.

A second round of nuclear negotiations between the United States and Iran is scheduled for Tuesday in Geneva, as both sides seek to avert a wider conflict. Iranian state media reported that Foreign Minister Abbas Araghchi and his delegation are en route to Switzerland for the indirect discussions, according to the Associated Press.

U.S. Secretary of State Marco Rubio said Sunday that he had “made clear he prefers diplomacy” in addressing Iran. He also confirmed that U.S. envoy Steve Witkoff and Jared Kushner are traveling “to have important meetings” related to the negotiations.

“We’ll see how that comes out,” Rubio said.