Ernest Moniz called Trump's rhetoric on nuclear weapons "extremely troubling."
"There are limits beyond which you don't go," Gen. Michael Hayden said.
Bush said he wouldn't be "an agitator in chief."
The actor added he is "slightly disgusted" by using the military for politics.
Gingrich also called the Obama administration's response to Iranian aggression "disgusting."
Trump also wondered why Iran is not releasing other Americans still in its custody.
The world needs American leadership now more than ever.
Bush plans on calling President Obama defeatist on ISIS.
Former Rep. Patrick Kennedy (D-R.I.) is challenging President Obama's handling of veterans.
He said the plan to train Syrian rebels was "highly fanciful."
Russia's strikes in Syria, she says, "are to shore up and stabilize the Assad regime."
Congress has spoken on only one aspect of compensation reform, neglecting healthcare.
Clinton defended U.S. involvement in Libya during a town hall event.
OPINION | Why are Republicans hell-bent on undermining the United States armed forces?
Bush defended Sen. John McCain (R-Ariz.) against Trump's attacks on his military service.
Bergdahl's lawyers may summon Trump over his public criticism of the Army sergeant.
"Our honor calls upon us to fight, to resist, not surrender," West said.
"Symbols of hate create more hate," she wrote.
Rep. Adam Schiff says more needs to be done and warns time is running out in the fight.
Fifty-three percent oppose boots on the ground, even as the U.S. steps up airstrkes.
The former GOP lawmaker says Obama is endangering U.S. personnel in Syria.
Paul says now is not the time to try to isolate Moscow.
Former President George W. Bush said on Wednesday that his golf game needs improvement.
The former CIA chief testified in front of Congress for the first time in three years.