PM : Doku Umarov says he ordered the May 24 airport bombing . PM : But he told Russian state television the alleged bomber was under the influence of drugs before the attack . ` He promises more attacks in the future . 36 people were killed in the blast .
PM : Doku Umarov says he ordered the May 24 airport bombing . PM : He promises more attacks in the future . 36 people were killed in the blast .