During a phone call, the two leaders discussed regional and global security challenges including threats from Iran.
Biden also emphasized the importance of concluding maritime boundary negotiations between Israel and Lebanon.
In its own readout of the call, Lapid's office said they "spoke at length about the negotiations on a nuclear agreement, and their shared commitment to stopping Iran’s progress towards a nuclear weapon."
The nuclear deal appeared near revival in March. But indirect talks between Tehran and Washington then broke down over several issues.