Kevin Costner has accused his estranged wife, Christine Baumgartner, of engaging in a "relentless jihad" against him during their divorce proceedings. The actor made the claim in court documents filed as part of their ongoing divorce case. Costner alleges that Baumgartner has been making false accusations against him and has been trying to damage his reputation through various means. The couple, who got married in 2004, announced their separation last year and are currently battling over custody of their three children.