"The president's impetuous, uninformed, weak conditions creates a lot of peril," Democratic Senator Michael Bennet said.
"This is very difficult news, a harbinger of new clashes between the Americans and radical Shiites in Iraq," Russian Senator Konstantin Kosachev said Friday.
Iranian military officials, lawmakers and clerics have vowed to take revenge against the U.S. after the assassination of Quds Force commander Qassem Soleimani.
Secretary of Defense Dr. Mark T. Esper told MSNBC's Andrea Mitchell that Iran should be a "normal country" and stop engaging in what he referred to as "bad behavior."
The president told military personnel they didn't have brand new aircraft three years ago, when Barack Obama was at the end of his term.
Shen Yi-ming was among those killed when a military helicopter crashed close to the capital Taipei on Thursday.
Photographs of the Truman Annex were discovered on the camera of a Chinese national who entered Naval Air Station Key West by climbing over rocks.
The president and first lady wished America a "very merry Christmas" and a "very happy, happy New Year" in this year's Christmas message.
Participating in a Christmas Eve teleconference from Mar-a-Lago with members of the military, Trump claimed that the current unemployment is "the best we've ever had."
"That is something really incredible," President Trump said. "It's a big moment. That's a big moment, and we're all here for it. Space. Going to be a lot of things happening in space."
Although the behavior wasn't seen as an effort to promote racist ideology, West Point said it was "disappointed" in the cadets actions
Malcolm Nance told MSNBC he took a "very dim view" of students' behavior but said he was not sure what sentiment was behind the gestures.
A bipartisan effort to repeal the so-called "military widow's tax" appears to be headed for success after it was included as a provision of the 2020 National Defense Authorization Act.
The U.S. Space Force has been fully-funded in a bill President Donald Trump tweeted he would sign "immediately."
"To our knowledge, this is the largest criminal case ever involving identify theft of military-affiliated personnel," U.S. Attorney John Bash said at a press conference.
At least one other person was killed and others were injured during the shooting, according to the Navy.
Canada is among the NATO nations spending less than 2 percent of GDP on military investments, much to Trump's frustration.
In an interview for ABC News, former military officers weighed in on Trump firing Navy Secretary Richard Spencer.
The U.S. will cut its contribution to the direct NATO budget, which covers maintenance of the NATO headquarters, joint security investments and some combined military operations.
A Lieutenant General in the Air Force lost a star after an investigation into his leadership practices revealed he had harassed a female subordinate.
Turkey began radar testing of its Russian-made S-400 anti-aircraft system on Monday, the purchase of which has created friction with Washington.
BTS and other male K-pop stars will not be given military service waiver as the South Korean government introduces new guidelines.
Lieutenant Colonel Alexander Vindman, a key witness in the impeachment investigation, has been consistently maligned by Trump and his allies as an untrustworthy partisan official.
On Friday, President Trump extended clemency for two members of the U.S. military accused of war crimes and reinstated the rank of a former SEAL found guilty of posing with a prisoner's corpse.
North Korea has lodged multiple protests over planned joint U.S.-South Korean war games, and said Wednesday it would respond to force in kind.
William Garcia, a 22-year-old corporal who served with Sanchez in Afghanistan, has been charged with manslaughter and is due to attend a hearing in December.
In his book, Trump Jr. described how a trip to Arlington National Cemetery made him think about all the business sacrifices his family had to make so his father could be president.