Biden Faces Intense Cross Currents in Iran Policy The airstrikes the president ordered on Iranian-backed militias show how he has to navigate between using force and pursuing diplomacy to revive the nuclear deal. Administration officials said President Biden had acted under his constitutional authority to defend American troops in carrying out airstrikes on sites used to launch drone attacks on American forces.Credit...Stefani Reynolds for The New York Times June 28, 2021 WASHINGTON — President Biden’s decision to strike Iranian-backed militias in Iraq and Syria early on Monday illustrated the delicate balancing act of his approach to Tehran: He must demonstrate that he is willing to use force to defend American interests, while keeping open a fragile diplomatic line of communication as the two countries try to resuscitate the 2015 deal limiting Iran’s nuclear program.