Veterans who saw combat after 9/11 are more likely to be victims of America's opioid crisis, adding "an important front in the Global War on Terrorism," according to a study. 
South Korea said on Thursday it will scrap an intelligence-sharing pact with Japan, drawing a swift protest from Tokyo and deepening a decades-old row over history that has hit trade and undercut security cooperation over North Korea. 
President Donald Trump welcomed new Secretary of Defense Mark Esper to the Pentagon Thursday with a speech emphasizing U.S. sovereignty through military might. 
Democrat Amy McGrath, a retired Marine lieutenant colonel who announced Tuesday she is running against Senate Majority Leader Mitch McConnell (R., Ky.), didn't include disclaimers about the Department of Defense and Marines not endorsing candidates as she invoked her military service in her launch video. 
In the lead-up to the 2020 elections, the United States is already laying the groundwork to boost its own counter-operations and detection methods in order to thwart a possible attack on the nationwide election systems, as well as social media efforts by rogue nations. 
The United States military and partners from 19 countries are getting set to kick off a massive series of war drills in Ukraine amid rising threats from Iran and Russia, according to the Defense Department. 
The United States is likely to take military action against Iran in the coming days for Tehran's downing a U.S. drone in international airspace on Wednesday near the Strait of Hormuz. 
Acting Defense Secretary Patrick Shanahan has withdrawn from consideration to head the U.S. military, President Donald Trump announced on Tuesday, stoking uncertainty about the leadership of the Pentagon at a moment of rising tension with Iran. 
WASHINGTON (Reuters) - U.S. President Donald Trump on Sunday said he was replacing Defense Secretary Jim Mattis two months earlier than had been expected, a move officials said was driven by Trump’s anger at Mattis’ resignation letter and its rebuke of his foreign policy. 
President Donald Trump announced on Thursday that Secretary of Defense James Mattis will be retiring at the end of February. 