ISLAMABAD - Senior al-Qaida operative Ilyas Kashmiri, regarded as one of the most dangerous militants in the world, was killed by a US drone aircraft missile strike in Pakistan, a Pakistani intelligence official and media said on Saturday.The death of the Pakistani militant was another intelligence coup for the United States after US special forces killed Osama bin Laden in a town close to Islamabad on May 2.Kashmiri is considered to be a top al-Qaida operative and one of the world's most dangerous and effective militants. He is said to be a former Pakistani military officer. He is high on the US list of most wanted militants. The US Department of State has labeled Kashmiri a "specially designated global terrorist".