The U.S. military has drafted options for three days of strikes, but in recent months the president has repeatedly vetoed plans to restart the war.

A war that was intended to demonstrate the reach of American power has now done the opposite. It is a lesson in unintended consequences.

According to U.S. and British officials, 12 B-1 Air Force bombers from R.A.F. Fairford air base were withdrawn because of the risk of a drone attack ordered by Iran’s Islamic Revolutionary Guard Corps...

The withdrawal came with unusual speed, following what U.S. officials said were threats of an Iran-based plot against the installation.

A mysterious call last Sunday near a military base used by the U.S. set in motion a huge counterterrorism response and days of uncertainty in Britain.

A mysterious call last Sunday near a military base used by the U.S. set in motion a huge counterterrorism response and days of uncertainty in Britain.

Iran has been launching drones and missiles at commercial ships in the waterway each week, though it has often failed to strike its targets, according to a Western security official.

Some Iraqis are celebrating the end of an American military presence that unleashed waves of bloodshed. Others fear what happens next for their country, trapped between Washington and Tehran.

The prospect of an attack on an air base used by U.S. forces prompted stepped-up protections across Europe, but confusion shrouds the case, in which the suspects were released on bail.

The aircraft carrier with its crew of about 5,000 sailors has spent more than 300 days at sea.

The president vacillated but decided on Sunday not to join Saudi Arabia, for now, in joint strikes against the Houthis in Yemen. But he also needs the kingdom’s cooperation in his war against Iran.

For the first time, the Pentagon reported costs incurred by each armed service. The figures are almost certainly on the low side, congressional officials said.

U.S. military officials in the past two weeks have sunk six large fishing vessels accused of providing fuel to fast boats carrying drugs from South America.

Officials say the small, limited deployment could serve as a model. But terrorists in the country have continued to attack and kill.

Officials say the small, limited deployment could serve as a model. But terrorists in the country have continued to attack and kill.

President Trump’s decision to curtail the military exercises came as allies question the U.S. commitment to longstanding alliances.

Defense Secretary Pete Hegseth urged Latin American military leaders gathered in Panama to ramp up their efforts alongside U.S. forces.

The Iranian strikes that killed three U.S. soldiers in Jordan show how quickly Iran’s war-fighting skills have evolved, as the Pentagon runs low on interceptors.

The United States’ war with Iran has caused a critical weaponry shortage. That leaves the U.S. military vulnerable and complicates Washington’s efforts to end the war.

The country’s new Trump-endorsed president takes office on Friday. Sweeping plans to target drug traffickers with U.S. help are already underway.

Among the worries is that expanded hostilities could dangerously drain the diminished stockpile of air defense munitions in the Middle East.

The Justice Department is seeking to compel testimony from reporters who wrote about the new Air Force One. The Times called the move a “brazen act.”

A.I. chatbots are not just a propaganda tool for violent extremists but are aiding in bomb construction and attack planning, new research finds.

The United States has blown through weapons as the cost of the war in Iran has hit nearly $1 billion a day. Our national security correspondent Eric Schmitt explains how American costs may go beyond t...

President Trump is asking U.S. allies to “go to” the Strait of Hormuz “and just take it.” Eric Schmitt, our national security correspondent, explains how difficult it would be to clear the strait by f...