4. Calls upon both parties to fulfil their obligations in implementation of the road mapS/2003/529, annex. by taking parallel and reciprocal steps in this regard, and stresses the importance and urgency of establishing a credible and effective third-party monitoring mechanism including all members of the Quartet;
4. 吁请双方在这方面采取平行和对等的步骤，履行其实施路线图S/2003/529，附件。 的义务，并强调建立一个可信的、有效的包括四方所有成员在内的第三方监测机制的重要性和迫切性；