KABUL (Reuters) - Afghanistan on Tuesday declared incumbent Ashraf Ghani winner of a disputed presidential election, but his main rival rejected the result and vowed to form his own government, threatening new turmoil as the United State strives to seal a U.S. troop withdrawal deal with Taliban militants.
Polls were held on Sept. 28 to select a president for the fourth time since U.S.-led forces overthrew the Taliban government in 2001. But the process was marred by allegations of rigging, technical problems with biometric devices used for voting, attacks and other irregularities..