"It has to be tested." — President Barack Obama, expressing skepticism that a cease-fire reached between Ukraine, Russia and Kremlin-backed separatists after five months of fighting will hold.
"I think it is absolutely critical that we have Arab states and specifically Sunni-majority states that are rejecting the kind of extremist nihilism that we're seeing out of ISIL, that say that is not what Islam is about and are prepared to join us actively in the fight." — President Barack Obama after the U.S. and key allies agreed that the Islamic State group is a significant threat to NATO countries that they will counter by economic and military means.
"I want to speak from my heart. But my heart is broken." — Arthur Sotloff at a memorial service for his son Steven Sotloff, a journalist who was beheaded by Islamic State militants.