Ukrainian officials have said they anticipate a major offensive in the Donbas by Russia, which has announced a shift in military strategy focusing on the country's east.
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"Ukraine is ready for big battles," Podolyak said in televised remarks. "Ukraine must win them, particularly in Donbas. And after that, Ukraine will get a more powerful negotiating position, from which it can dictate certain conditions. After that, the presidents will meet. That may take two or three weeks."