Josh Earnest said the executed jihadists had been "convicted of very serious" crimes.
Republicans said the historic policy shift is a bad deal for the U.S.
The executions came a day after an ISIS video showing a pilot being burned alive.
The images come amid speculation about the former leader’s health.
Uncertainly is the only way to characterize the region in the wake of King Abdullah's death.
Leaders are looking for ways to ratchet up pressure over violence in Ukraine.
Kerry said Kenji Goto's execution shows ISIS's "brutality and extremist agenda."
Strategic success attributed to Kurdish forces and U.S. "air component."
Imad Mughniyah was killed by a car bomb in Syria in 2008.
Sen. Ron Johnson says Clinton hasn't been "held accountable."
It is hard to imagine how Greece's new government could have gotten off to a worse start.
Three American contractors were killed in the Thursday attack.
Top House Democrats huddled with Israeli officials on Wednesday.
The killing of a master terrorist is the final chapter in a much longer story.
Ashton Carter says Iran's "sectarian" support for Shia militias weakens the government.
The White House believes sanctions are hurting Moscow.
A spokesman acknowledged "a wide variety of opinions about" arming Kiev.
"It's the worst that I've ever seen in my lifetime," McCain said.
President condemns apparent killing of Japanese freelance journalist Kenji Goto.
Israeli leader's controversial speech to Congress comes just before a tough election at home.
Sen. Kelly Ayotte (R-N.H.) points to reports a former detainee is trying to get back in the fight.
Sen. Tom Cotton, a former infantry officer, calls Iran an "Islamist tyranny."
It would be the highest level American visit since the crisis in Ukraine began.