Russia’s annexation of Crimea
Russia invaded Ukraine's Crimean Peninsula in February 2014 amid the deadliest days of the EuroMaidan Revolution that eventually ousted pro-Russian ex-President Viktor Yanukovych. While Yanukovych's pro-Russian regime was murdering protesters in downtown Kyiv, around 30,000 Russian troops crossed into Crimea, taking hold of the peninsula by early March 2014.