31 March 1999 - The present report is submitted pursuant to paragraph 22 of General Assembly resolution 53/203 A of 18 December 1998, in which the Assembly requested the Secretary-General to report every three months during its fiftythird session on the progress of the United Nations Special Mission to Afghanistan. The present report, which covers developments since the issuance of the report of the Secretary-General of 23 November 1998 (A/53/695- S/1998/1109), is also submitted in response to requests by the Security Council for regular information on the main developments in Afghanistan. Ful report