THE HAGUE, August 6 (RIA Novosti) - Former Bosnian Serb leader Radovan Karadzic has asked that the UN war crimes tribunal to summon two diplomats at the heart of U.S. policy in the Balkans in the 1990s to testify in his genocide case.

In his submission circulated by the Hague-based tribunal Wednesday, Karadzic named former U.S. Secretary of State Madeleine Albright and former U.S. envoy to the Balkans Richard Holbrooke as witnesses in his defense.

He again claimed that Holbrooke had promised him immunity from prosecution by the UN tribunal in a 1996 deal under which he had stepped down as president and disappeared from public life.

Karadzic said he wanted Holbrooke to testify under oath, and challenged the legality of his arrest and trial. Holbrooke has denied any deal with Karadzic.

The ex-president earlier expressed concerns that a "media witch-hunt" would make it impossible for him to get a fair trial on war crimes and genocide charges at a UN tribunal.