An agreement struck by the U.S., the European Union, Russia and Ukraine has raised hopes for defusing the Ukrainian crisis, which has strained East-West ties to a degree unseen since the Cold War. The deal Thursday in Geneva came after the four parties held talks together for the first time since Ukraine's turmoil began nearly five months ago. A look at how the Ukrainian crisis has evolved.
Associated Press: Turning points of Ukraine crisis
A pro-Ukraine rally in Donetsk on April 17.
