One of the most brilliant films I've ever seen. Other reviews cover well the basics of the film - three ill-fated love stories set in or associated around a war-torn country (Bosnia implied). It draws you in, sickens you, and makes a point of how war goes on and on and on simply because people always always always have a history of mistreatment by others, so always have a reason for their own revenge.
What no other review I've read seems to note is the time trick played by the film. The tales loop back, so that each one takes place after the previous tale, and the first tale takes place after the last one. This simple twist is what makes the points of futility and pain and eternity of war - and is what makes the film so powerful and brilliant.