The group that coordinated the open letter, Physicians For Human Rights, says 750 medical personnel have died in Syria since 2011.
As Kerry pleads with Russia to bring his military actions in Syria into line with their stated intentions, Putin senses craven weakness.
We must do right by Syrian victims like five-year-old Omran, says Mina Al-Oraibi.
The five-year-old is shown in shock, covered head to toe in dust and blood, after an alleged airstrike.
Getting rid of Bashar al-Assad would make life easier for the jihadis, who are more resilient and organized than the "moderate" rebels.
More than two dozen doctors in the city call for a no-fly zone to stop Russian strikes.
The Syrian city has now been without running water for four days, according to the U.N.
Rebels continue to attack deep into government-held territory in a major offensive designed to break the month-long siege.
Six medical facilities were struck, including a pediatric unit, in late July.
Syrian government forces have also been accused of using chemical weapons.
Assad is getting away with murder. The use of poison gas is denounced in principle, but permitted in practice.
Besieged residents use their initiative to prevent air strikes targeting people in the northern Syrian city.
Syrian President Bashar al-Assad's forces made the announcement at the start of Eid al-Fitr.
A policy of keeping the violence "as low as possible for as long as possible" is odd—a plan to put the war's killing, suffering and destruction in slow motion.
The group may now use guerrilla warfare and turn its attention to attacking civilian targets.
ISIS has been targeting the Turkish border town of Kilis with rockets.
Moscow and Tehran have supported Syria's government with ground troops and airstrikes.
The Damascus suburb of Darayya has been without food aid since 2012.
More than 50 people, including children, died in a shelling of an Aleppo hospital last week.
Nearly 250 people have been killed in Syria since April 22 as peace talks break down.
Monitoring group reveals the toll on civilian life as ceasefire collapses.