Developments in Ukraine
Poroshenko: Heavy Weapons to Return to Front Lines if Truce Breached

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Russia and Ukraine's energy ministers are holding emergency talks in Brussels as Russian gas giant Gazprom threatens to cut off deliveries to Ukraine for lack of payment, at EU headquarters in Brussels, March 2, 2015.

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A convoy from the Ukrainian armed forces, including armored personnel carriers, military vehicles and towed artillery pieces, begins to pull back from the Debaltseve region, in Blagodatne, eastern Ukraine, Feb. 27, 2015.

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Ukraine President Petro Poroshenko visits the National Defense University in Kyiv, Feb. 27, 2015.

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A priest bows as Russia-backed separatist fighters drive in a self-propelled 152 mm artillery piece, part of a unit that was moved away from the front lines, in Yelenovka, near Donetsk, Feb. 26, 2015.