Vladimir Putin is again massing troops near Ukraine’s borders, Kremlin-controlled media has ramped up threats of war, and the United States and key European allies are concerned that another Kremlin military offensive against Ukraine may be imminent.
Russia's War Against Ukraine
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Brian O’Toole, Daniel Fried: What if Russia invades Ukraine (again)?

Ukrainian servicemen are seen inside a fortified position on the frontline with Russia backed separatists near small city of Maryinka, Donetsk region, on April 12, 2021.