Ukrainian President Petro Poroshenko has secured a temporary peace in the troubled east which he says gives him a chance to move Ukraine towards its dream of a place in Europe - but Russia's Vladimir Putin still holds cards that could thwart him.
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.