Administration officials would provide no more information beyond the three-sentence statement from the White House.
"I just don't want to kill 10 million people," Trump said in the Oval Office.
It will be Khan's first trip to the U.S. since becoming prime minister.
An Indian pilot whose captivity caused fears that the subcontinent could erupt into war was handed over to officials.
Nuclear-armed rivals India and Pakistan face their worst tension in years over the disputed region of Kashmir.
Pakistan's military said Wednesday it shot down two Indian warplanes in the disputed region of Kashmir.
The Taliban control nearly half of Afghanistan, and are more powerful than at any time since the 2001 U.S.-led invasion.
Afghan generals worry about their military's ability to face a Taliban insurgency unfettered by U.S. troops and air power.
Three contractors pleaded not guilty to charges of major fraud, conspiracy and international money laundering.
In the past, Khalilzad has called on the U.S. to declare Pakistan a terrorist state, saying it harbors insurgents.
New soldiers at Fort Sill were the first to graduate Army Basic Combat Training wearing the service's new Army Greens.
Air Force 1st Lt. Kenneth "Kage" Allen was killed.
Soldiers offered feedback on the Army's futuristic new IVAS technology.
The Defense Department is predicting flat or declining budgets in future years.
Preparations are underway across the Departments of Defense and Veterans Affairs to receive doses of a COVID-19 vaccine.