The death toll includes 19 Iranians, raising fears that the region may be sliding into an unprecedented direct confrontation between two archenemies.
Inspectors' lack of access to Douma has left unanswered questions about the April 7 attack that prompted a military response by the U.S. and two allies.
The president holds individual conversations with French and British leaders. The White House says the three nations agreed the assault on Syria was "successful and necessary to deter" the future use of chemical weapons.
"We're looking very, very seriously, very closely at the whole situation," the president tells reporters.
Hours after the main rebel group in the area declares a cease-fire, an agreement is reached to evacuate the second of three areas held by opposition fighters east of Damascus.
Schools have repeatedly been struck from the air by Saudi, UAE, Moroccan and Jordanian pilots using American-supplied planes and bombs, in a campaign backed by Washington and the United Kingdom.
Russia's U.N. Ambassador Vassily Nebenzia reacts by saying a humanitarian cease-fire is "not realistic" because "the terrorists" are keeping up attacks.
Turkish troops and allied Syrian fighters' offensive to root out Kurdish fighters in northern Syria has entered a second week.
The American public’s lack of attention to the president’s violent and dangerous foreign policy helps explain our ongoing wars.
The number killed in the nine-month battle to liberate the Iraqi city from Islamic State marauders has not been acknowledged by the U.S.-led coalition.