UNITED NATIONS - Syria has not fully complied with its obligations to withdraw troops and heavy weapons from towns and has yet to send a "clear signal" about its commitment to peace, the UN chief told the Security Council in a letter obtained by Reuters on Wednesday.Secretary-General Ban Ki-moon said an expanded UN monitoring mission for Syria would he comprised of "an initial deployment" of up to 300 unarmed observers who would supervise a fragile week-old ceasefire between forces loyal to President Bashar Assad and opposition fighters seeking to oust him.Read the full story here