Russia's plans to build a natural gas pipeline that bypasses Ukraine to the south is in doubt as the standoff between Russia and Ukraine continues to escalate.
Kiev gave protesters in the east 48 hours to come to the table. But in both Donetsk and Luhansk, armed demonstrators remained behind their barricades.
Ukraine again missed a payment deadline late Monday on the natural gas it buys from Russia. Ukraine's debt to Russia over natural gas has led to supply cutoffs before, but there are other ways to resolve a long-standing dispute.