4. 本报告是根据安全理事会第 2451(2018)号决议第 7 段提交的，安理会在该段中请秘书长按照各方要求，每周报告该决议的执行进展情况，包括各方违反承诺的情况，直至另行通知为止。本报告所述期间为 2018 年 12 月 21 日至 28 日。
4. The present note is submitted pursuant to paragraph 7 of Security Council resolution 2451 (2018), in which the Council requested the Secretary-General to report on progress regarding implementation of the resolution, including any breaches of commitments by the parties, on a weekly basis, as called for by the parties, until further notice. The present report covers the period from 21 to 28 Decembe r 2018.