Subscribe to VICE News here: On Sunday, recently elected President Petro Poroshenko vowed he would end two months of fighting with rebels in eastern Ukraine by the end of the week. Last week, however, the Ukrainian army suffered a series of setbacks in the Luhansk region and lost control of several checkpoints along the Russian border. Separatist groups now say they have occupied up to 125 miles of the frontier, allowing for fighters, weapons and other goods to move a
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