Separatists rebels in eastern Ukraine have made gains against Ukrainian government forces as fighting in the region intensifies and past ceasefires have been abandoned.
The Ukrainian military continues to tighten the noose around pro-Russian separatists in eastern Ukraine, most of which have fled to the regional capital of Donetsk, increasing the likelihood of a long and bloody struggle for control of the city.
A new report offers the most concrete evidence yet that Russia is supplying arms to rebels in eastern Ukraine.
