their assessments in respect of such mandate periods as may be approved by the Security Council for the 12 months subsequent to 31 March 1990; decided that the remaining $10,117,762 of the unencumbered balance should be retained in the Special Account subject to the review to be undertaken by the Advisory Cosxxittee as to the level of commitments to be authorixed for the Observer Group for the mandate period from 1 April to 30 September 1990, taking into account the status of the receipt of assessed contributions for the period from 1 October 1989 to 31 March 1990, inclusive: and invited voluntary contributions to the Military Observer Group. acceptable to the Secretary-General, in cash, in convertible or readily usable currencies, and in the form of supplies and services (resolution 441189). On 29 March 1990, the Security Council renewed the mandate of DNIIMOG for a period of six months until 30 September 1990 (resolution 651 (1990)). Documents : (a) Report of the Secretary-General on the financing of u#IIMOG (resolution 44/189); (b) Report of the Advisory Conxnittee on Administrative and Budgetary Questions. 135. -oftha The Security Council, by its adoption of resolution 626 (1988) on 20 December 1988, decided to establish the United Nations Angola Verification Mission for a period of 31 months beginning 3 January 1989. I.. . A/45/100 English Page 376 At its forty-fourth session, Ilp/ the General Assembly concurred with the observstions, reconxnendations and conclusions contained in the report of the Advisory Cosxnittee on Administrative and Budgetary Questions: urged all Member States to make every possible effort to ensure payment of their assessed contributions to UNAVCM in full and on time; decided, taking into account the outstanding assessed contributions due to the Special Account of ‘UNAVCM, to defer any further action on the estimated unencumbered balance of the appropriations as 
**Analysis**
The text appears to be discussing the financing and budgetary aspects of a United Nations mission, specifically the United Nations Angola Verification Mission (UNAVCM) and the Military Observer Group (MOG). The language used is formal and bureaucratic, indicating that the text is likely related to the administrative and financial management of a UN mission.

**Category**
Humanitarian aid and relief, International relations