A lawyer for Kenyan Vice President William Ruto asked the International Criminal Court on Sunday to adjourn his trial for crimes against humanity because of the militant attack on a Nairobi shopping mall. \"The defence for Mr. William Samoei Ruto urgently requests... the Trial Chamber adjourn the trial proceedings in this case in order that Mr. Ruto can return to Kenya to deal with an ongoing and extremely serious matter of national security,\" a request from his lawyers said. Ruto is currently in The Hague where he is defending himself against charges of masterminding some of the 2007-08 post-election violence that left over 1,000 dead and several hundred thousand displaced.