Write a summary for every entity in the following article:
"On 23 February 2022, NAME_1 was in Vienna on sabbatical from his teaching job at Harvard. He went to bed hoping the disturbing news on CNN was somehow wrong. Like many others, including his country’s president, NAME_2, the Ukrainian historian was reluctant to believe Russia was about to launch a full-scale assault on his homeland.
The omens suggested otherwise. That autumn, NAME_3 had massed tanks and battalions close to Ukraine’s borders. And yet it was hard to believe this portended a brazen imperial expedition by one state against another, and the biggest war in Europe since 1945. “I believed the troop movement was part of Russian blackmail,” NAME_4 writes.
At 6am he woke and checked his email. A US colleague alerted him to the stunning developments. Russian armoured columns were on the move. They were not merely advancing into eastern Ukraine, which NAME_4 had considered the most likely vector for a bigger attack. A war instigated by the Kremlin had raged there since 2014, in which 14,000 people had perished.
Instead, Russian troops were going to Kyiv. Their objective: to overthrow Zelenskiy’s pro-western government and to replace it with a Moscow-loyal Gauleiter administration. Meanwhile, enemy rockets and missiles were falling on the capital and on other cities including Dnipro and NAME_4’s native region of Zaporizhzhia. “It was surreal,” he observed.
NAME_4 is the foremost chronicler of early and modern Ukraine and th Your entire response should be in English, and in all capital letters.
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