From left, head of Kherson Region Vladimir Saldo, head of Zaporizhzhia region Yevgeny Balitsky, Russian President Vladimir Putin, Denis Pushilin, leader of the Donetsk People's Republic and Leonid Pasechnik, leader of Luhansk People's Republic, pose for a photo during a ceremony to sign the treaties for the four regions to join Russia,. Photo: Dmitry Astakhov/Sputnik/Government Pool/Via AP.

From left, head of Kherson Region Vladimir Saldo, head of Zaporizhzhia region Yevgeny Balitsky, Russian President Vladimir Putin, Denis Pushilin, leader of the Donetsk People's Republic and Leonid Pasechnik, leader of Luhansk People's Republic, pose for a photo during a ceremony to sign the treaties for the four regions to join Russia,. Photo: Dmitry Astakhov/Sputnik/Government Pool/Via AP.