By Natalia Zinets and Pavel Polityuk KYIV (Reuters) -Ukrainian President Volodymyr Zelenskiy said on Saturday his government was ordering the mandatory evacuation of people in the eastern Donetsk region, scene of fierce fighting with Russia. In a late-night television address, Zelenskiy also said the hundreds of thousands of people still in combat zones in the larger Donbas region, which contains Donetsk as well as the neighboring Luhansk region, needed to leave. “The more people leave (the) Donetsk region now, the fewer people the Russian army will have time to kill,” he said, adding that res…