(CNN)The scene of devastation is staggering in Debaltseve, the town at the heart of the battle between Ukrainian forces and pro-Russian separatists in recent days. Barely a house is unscathed by shelling. Elderly civilians trapped by the fighting still cower in basements. After most Ukrainian forces pulled out Wednesday, the separatists are now in control. It's obvious there's been a seismic shift on the battlefield. But it's not yet clear what the Ukrainian withdrawal means for the shaky peace deal that came into force Sunday. Will the separatists halt their offensive, satisfied with the territory they hold? Or will they be emboldened to push for more?
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A CNN team finds wide destruction in Debaltseve, now in separatist hands
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Leaders of Russia, Ukraine, France and Germany speak a week after forging peace deal
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Ukrainian President says a separatist offensive in Debaltseve breached the deal
"The whole world saw that @placeholder doesn't adhere to its commitments," he said after his troops' hasty retreat.