Normally it takes years to prove a new vaccine is both safe and effective before it can be used in the field. But with hundreds of people dying a day in the worst ever outbreak of Ebola, there is no time to wait.
Moscow called on Sunday for a new "reset 2.0" in relations with Washington, saying the situation in Ukraine that had led to Western sanctions against Russia was improving thanks to Kremlin peace initiatives.
A Twitter account run by an Qaeda member said the leader of the al Qaeda-linked Khorasan group was killed in a U.S. air strike in Syria, SITE monitoring service said on Sunday, following several days of uncertainty over whether he survived the raid.