"It's very simple. They're delinquent," Trump said at the White House before leaving on a campaign trip to Texas.
The move will cost billions of dollars, according to Defense Secretary Mark Esper.
The U.S. is at risk of falling behind Russia and China on "game changer" hypersonic missile development.
President Trump said he has never spoken to Putin about reports that bounties might be connected to deaths of U.S. troops.
Two Russians who have held senior roles in Moscow’s military intelligence service known as the GRU have been identified.
The U.S. and Australia said they will expand military cooperation as tensions soar with China.
South Korea said Tuesday it has won U.S. consent to use solid fuel for space launch vehicles.
The message of the drill was clearly targeted at the United States.
Some experts say Pyongyang will likely avoid serious talks with Washington before the U.S. presidential elections.
Taliban spokesman Zabiullah Mujahed said commanders have been ordered not to carry out operations for three days and nights.
The U.S. Court of Federal Claims published a ruling in favor of a motion to dismiss the case brought by Nathan Sommers.
Those losses hastened the war's conclusion but were not solely responsible for it, two historians say.
Sara Faulkner had the "it" factor as the first woman to graduate from the Coast Guard's helicopter rescue swimmer school.
The date for the move, as well as the location in Poland, has not been announced, but it will take place in 2021.
The UH-60L took off from the St. Cloud Army Aviation Support Facility on Dec. 5 and went missing for almost two hours.