AG names detained person of interest as Massachusetts Air National Guard member Jack Teixeira, says he was taken into custody 'without incident'

Fallout from documents' release could be significant, potentially putting US intelligence sources at risk, while giving country's foes key information

Defense department says officials are in touch with America's allies about the sensitive files, one of which claims Mossad leaders are pushing the anti-overhaul rallies in Israel

Defense official tells Biden administration Jerusalem has not changed policy against providing weapons to Kyiv, report says

Defense Department announces $300 million assistance package for Kyiv; US reportedly to also help facilitate transfer of Soviet-made tanks

US Defense Department assessment says Beijing could have over 1,000 nukes by 2030, 2.5 times more than estimated a year ago

Deputy assistant secretary of defense appeared to say drones that hit Mercer Street were launched from wartorn country, but later clarification says this was not the case

Trip would be 1st to the Middle East by a Biden cabinet member; talks expected to focus on Iran, ensuring Israel's qualitative military edge

Michele Flournoy, seen as top choice to serve as defense secretary, would be first woman to lead the department

New appointments include ex-general who reportedly tweeted that Islam is the 'most oppressive violent religion I know of' and called Obama a 'terrorist leader'