CAIRO - The head of the Syrian National Coalition Moaz Alkhatib resigned on Sunday, saying in a statement he had taken the step so he could work with more freedom."I had promised the great Syrian people and promised God that I would resign if matters reached some red lines," he said in a statement posted on his official Facebook page. He did not explain what had prompted his resignation."Now I am fulfilling my promise and announcing my resignation from the National Coalition in order to be able to work with freedom that cannot be available within the official institutions," he said.A spokesman for Alkhatib confirmed his resignation.