Tom Bowman

The U.S. says Iran shot down a military surveillance drone in an unprovoked attack and denies the aircraft was over Iranian territory. Iran claims it shot down a spy drone over a southern province.

Iran's Revolutionary Guard shot down a U.S. military drone in the Persian Gulf. A U.S. official confirms to NPR that the drone was taken down but disputes the details surrounding the attack.

President Trump chose Orlando, Fla., for the official kickoff of his reelection campaign. Also, he tweeted about an intensified immigration enforcement effort.

Acting Defense Secretary Patrick Shanahan withdrew from consideration to be permanent secretary and resigned. Army Secretary Mark Esper will serve as acting secretary.

Acting Defense Secretary Patrick Shanahan asked President Trump to withdraw his nomination to assume the post permanently. Trump says Shanahan will be replaced by Army Secretary Mark Esper.

Before the two tankers were attacked Thursday there were four other ships attacked in the last month around the Persian Gulf. The U.S. Navy watches the sea lanes there closely.

Warships from the U.S. and Russia narrowly avoided a collision in the Philippine sea. The countries are blaming each other.

Gen. Robert Neller will step down as Marine Corps commandant this fall. In a wide-ranging interview, he talks about Russia and China, cyberwarfare, female Marines and sexual assault in the Corps.

More than two dozen ex-Turkish military officers are in the U.S. seeking asylum — afraid they'll be jailed if they return home. They say they were falsely accused of taking part in a 2016 coup.

Secretary of State Mike Pompeo and acting Defense Secretary Patrick Shanahan gave closed briefings on Tuesday to the full House and Senate on the situation with Iran.

A debate has been playing out in the Trump administration and with its European allies over whether the threat posed by Iran has changed. Trump has said he doesn't want a military conflict with Iran.

A debate is underway within the Trump administration over how significant a threat Iran is to the United States and how to respond.

President Trump will nominate acting Defense Secretary Patrick Shanahan to the permanent role. Shanahan has spent much of his life working at Boeing before joining the Trump administration in 2017.

Shanahan has served as acting defense secretary since former Defense Secretary Jim Mattis resigned last December over President Trump's decision to withdraw U.S. troops from Syria.

Boeing is struggling with its commercial airline business, but how will that impact its defense work? Some analysts say Boeing always depended on commercial work to help bid for long-term defense work.

National Security Adviser John Bolton announced Sunday the U.S. is sending USS Abraham Lincoln Carrier Strike Group and land-based bombers to the Middle East in response to unspecified developments in Iran.

The Pentagon's anonymous survey of sexual assault in the military shows a sharp increase. It's unclear whether this is due to more reporting or more instances of assault.

Acting Secretary of Defense Patrick Shanahan has been cleared by the Pentagon's inspector general of advocating for his former employer, Boeing. This clears the way for Shanahan's likely nomination.

The ISIS physical caliphate is no more, but it leaves a complex legacy. Thousands of ISIS fighters and family members are in camps with no clear future.

Acting Defense Secretary Patrick Shanahan appeared before the House Armed Services Committee for the first time following Democrats taking control of the House.