WASHINGTON — The U.S. will move a fighter jet squadron to the Middle East and maintain an aircraft carrier in the region, the Pentagon said Friday, beefing up the American military presence to help defend Israel from possible attacks by Iran and its proxies and safeguard U.S. troops.

Defense Secretary Lloyd Austin has also ordered additional ballistic missile defense-capable cruisers and destroyers to the European and Middle East regions and is taking steps to send more land-based ballistic missile defense weapons there, the Pentagon said in a statement Friday evening.

The shifts make good on a promise President Joe Biden made to Israeli Prime Minister Benjamin Netanyahu. In a call Thursday afternoon, Biden discussed new U.S. military deployments to protect against possible attacks from ballistic missiles and drones, according to the White House. In April, U.S. forces intercepted dozens of missiles and drones fired by Iran against Israel and helped down nearly all of them.

U.S. leaders worry about escalating violence in the Middle East in response to recent attacks by Israel on Hamas and Hezbollah leaders, which triggered threats of retaliation. Iran also has threatened to respond after Hamas leader Ismail Haniyeh was assassinated in Tehran on Wednesday, a day after senior Hezbollah commander Fouad Shukur was killed in Beirut.

Israel has vowed to kill Hamas leaders over the group’s Oct. 7 attack, which sparked the war in Gaza.

Austin is ordering the USS Abraham Lincoln aircraft carrier strike group to the Middle East to replace the USS Theodore Roosevelt carrier strike group, which is in the Gulf of Oman but scheduled to come home later this summer. That decision suggests the Pentagon has decided to keep a carrier consistently in the region as a deterrent against Iran at least until next year.

The Pentagon did not say where the fighter jet squadron was coming from or where it would be based in the Middle East. A number of allies in the region are often willing to base U.S. military forces but don’t want it made public.

The Pentagon has options to provide additional land-based ballistic missile defense, such as the Patriot or the terminal high altitude area defense, known as THAAD, both of which launch interceptor missiles from specialized trailer-based mobile launching systems. The Pentagon did not identify what system it would be deploying to augment defenses in the region.

The White House in a statement said Biden “reaffirmed his commitment to Israel’s security against all threats from Iran, including its proxy terrorist groups Hamas, Hezbollah and the Houthis.”

Earlier Friday, Sabrina Singh, Pentagon spokeswoman, told reporters that moves were in the works. She said Austin “will be directing multiple” force movements to provide additional support to Israel and increase protection for U.S. troops in the region.