NEW DELHI (Reuters) - India is  disappointed  by China s decision to again block its request at the United Nations to blacklist the head of a Pakistan-based militant group, the country s foreign ministry said in a statement on Thursday. India, backed by the United States, has been trying to get Maulana Masood Azhar on a U.N. list of groups with ties to Al Qaeda, blaming his group for a series of attacks in India, including one on its parliament in 2002 and another last year on an airbase. But China, a member of the U.N. Security Council, has repeatedly put a technical hold on the Indian request citing a lack of consensus, a claim India rejects.  We are deeply disappointed that once again, a single country has blocked international consensus on the designation of an acknowledged terrorist and leader of U.N.-designated terrorist organization, Masood Azhar,  India s foreign ministry said. China s foreign ministry spokeswoman Hua Chunying said last month there were clear rules for listing a person or group as a terrorist, and that China has always believed the relevant U.N. committee should operate on the principles of objectivity. The wrangling over Masood Azhar, a longtime Indian foe, has become a thorny issue in ties between China and India. India worries that China will stick by its  all-weather  friend, India s arch-foe Pakistan.  India strongly believes that double standards and selective approaches will only undermine the international community s resolve to combat terrorism,  India s foreign ministry said. 
India "disappointed" with China blocking bid to blacklist militant leader