New figures show the death toll from violence in eastern Ukraine has doubled in the past weeks. The United Nations says around 1,000 people have died since late July as the U.S.-backed Ukraine government steps up fighting with separatist rebels. Around 5,000 people have been wounded. Russia has sent what it calls a massive convoy of humanitarian aid for residents of eastern Ukraine, but the delivery has been held up amidst Ukrainian government accusations that Russia is trying to smuggle in ammunition to the rebels or stage a pretext for an invasion.