The US and the European Union have blamed pro-Russian separatists for the downing of flight MH17. And there's a lot of evidence to support their claims. In the past few weeks, both the US and the EU have demanded that Russia do more to secure their border with Ukraine and prevent the further passage of weapons and fighters into the war zone. It’s unclear how many Russian militants and weapons have already entered Ukraine. But rumors continue to circulate about new weapons deliveries and dead Russian soliders being smuggled back home. DW reporter Markus Reher visits eastern Ukraine to find out more.