ISIS' Afghanistan-based affiliate has emerged as a major threat capable of carrying out direct attacks on the US and is actively using its members' social media to acquire contacts in the United States, a US intelligence official in Afghanistan tells CNN.
A new Pentagon report on threats in space warns that China and Russia are both developing capabilities to threaten the US' preeminent position, including lasers that could target and destroy US satellites.
Former Secretary of Defense James Mattis was right to disagree with President Donald Trump over his plan to withdraw US troops from Syria, a top civilian official at the Pentagon told congressional lawmakers on Wednesday.
ISIS will claim victory over the US and is likely to regain territory as a result of President Donald Trump's decision to withdraw from Syria, according to a new report released Monday by the Pentagon's Inspector General.
The US military is seeking a $331 million reimbursement from Saudi Arabia and the United Arab Emirates after discovering it failed to properly charge the Saudi-led coalition fighting in Yemen for aerial refueling services due to an "accounting error," the Pentagon said Thursday.
The Defense Department has temporarily grounded all of its 245 F-35 fighter jets for inspection of a potentially faulty engine part in the wake of last month's crash in South Carolina.
Google will no longer compete for a multibillion dollar cloud computing contract with the Pentagon because the project may conflict with its corporate mission.
As President Donald Trump grapples with a number of huge foreign policy challenges over the coming months, he is going to have to make some key decisions on the generals who advise him and lead the U.S. military.
Russian President Vladimir Putin's new $5 billion weapons deal with India --- a key American ally -- to sell an advanced S-400 air defense system is just the latest open challenge by Russia to US defense dominance.
The Pentagon released a report Friday accusing China of seeking to undermine the US military's industrial base, the latest in a series of US jabs at Beijing.
An envelope addressed to President Donald Trump contained a substance suspected to be ricin and appeared to be connected to similar envelopes sent to the Pentagon, a law enforcement source told CNN.
Establishing President Donald Trump's sought-after Space Force could cost $12.9 billion over its first five years, according to an Air Force document obtained by CNN.
Here's what you need to know to Start Your Week Smart.
The Pentagon's high-tech research agency laid the groundwork for the Internet, stealth aircraft and self-driving cars. Now, it's going big on artificial intelligence.
President Donald Trump sought to cast blame Friday for the cancellation of his planned military parade on Washington city council officials, saying they had inflated the cost.
One of Defense Secretary James Mattis' most senior civilian advisers is being investigated by the Defense Department Office of Inspector General for allegedly retaliating against staff members after she used some of them to conduct her personal errands and business matters, according to four sources familiar with the probe.
Vice President Mike Pence called Thursday for the establishment of a Space Force by 2020, while also announcing immediate steps the Department of Defense would take to reform how the military approaches space.
Vice President Mike Pence will visit the Pentagon on Thursday to discuss the future of the US military in space, including the potential for establishing President Donald Trump's proposed Space Force, multiple US officials tell CNN.
The Pentagon is banning deployed personnel from using fitness trackers, smartphones and potentially even dating apps that use geolocating features that could reveal the user's location.
A group of House Democrats from the Armed Services committee are demanding to know why the Pentagon didn't issue an official memo marking June as LGBT Pride Month.
The Department of Defense announced Wednesday that it has received a request from the Department of Homeland Security "to house and care for an alien family population of up to 12,000 people."
Defense Secretary James Mattis said the Pentagon is in "close alignment" with the Department of Homeland Security with efforts to utilize military bases to house undocumented immigrants along the southern US border.
US President Donald Trump's mooted Space Force, which he suggested will be a "separate but equal" branch of the military, is vital to maintaining a tactical advantage over geopolitical adversaries, according to analysts and members of the US military.
The Pentagon has "suspended all planning" as expected for August joint military exercises with South Korea and several allies in the region, to comply with President Donald Trump's desire to pull back on so-called "war games," according to a statement from Dana White, chief Pentagon spokesperson.
