Former Bosnian Serb leader Radovan Karadzic is summing up his defense case — insisting he is innocent — as his long-running genocide trial draws to a close.

In a written brief summarizing his defense, Karadzic says he should not be convicted, but acknowledges that, as wartime leader of the Serb entity in Bosnia, he "bears moral responsibility for any crimes committed by citizens and forces of Republika Srpska."

Karadzic says prosecutors at the U.N.'s International Criminal Tribunal for the Former Yugoslavia failed to prove he masterminded Bosnian Serb atrocities throughout the 1992-95 Bosnian war that left 100,000 dead.

The 69-year-old former president began addressing judges Wednesday morning, two days after prosecutors said he should be convicted and imprisoned for life.