their or her- depending on how you'd like to view Syria.

http://dictionary.sakhr.com/idrisidic_2MM.asp?Lang=E-A&Sub=���...
Arabic - English
وَفَى فــــعــــــــل

وَفَى بِـ : نَفَّذ
close , discharge , serve , finish , realize , implement , consummate , square , complement , carry out , complete , end , do , finish , finalize , fulfill , ** fulfill ** , conclude

وَفَى - [و ف ي]. (ف: ثلا. لازمتع. م. بحرف). وَفَيْتُ، أَفِي، فِ، مص. وَفَاءٌ، وَفْيٌ. 1.**"وَفَى الصَّادِقُ بِوَعْدِهِ أَوْ عَهْدِهِ" : أَتَمَّهُ، أَنْجَزَهُ كَمَا وَعَدَ.** 2."وَفَى دَيْنَهُ" : أَدَّاهُ كَامِلاً، تَامّاً. 3."وَفَى نَذْرَهُ" : أَبْلَغَهُ. 4."وَفَى رِيشُ الجَنَاحِ" : تَمَّ. 5."وَفَى العُمْرُ" : اِمْتَدَّ.

http://news.bbc.co.uk/2/hi/middle_east/4322089.stm
He said after the redeployment, Lebanon and Syria "will have fulfilled our obligations under the Taef accord and under [UN Security Council] Resolution 1559".

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Note added at 14 mins (2008-12-16 08:24:13 GMT)
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I forgot to put the link for the Arabic definition:
http://lexicons.sakhr.com/openme.asp?fileurl=/html/3083077.h...

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Note added at 1 hr (2008-12-16 09:31:51 GMT)
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www.charity-commission.gov.uk/Library/publications/pdfs/cc3...
وأﻧﻬﺎ ﺗﻔﻲ ﺑﺎﻻﻟﺘﺰاﻣﺎت اﻟﻘﺎﻧﻮﻧﻴﺔ...
...and meet their legal obligations.

*

the verb consummate gives the best meaning for the word required

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Note added at 1 day5 hrs (2008-12-17 13:46:19 GMT) Post-grading
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look how i did wrote the word (their) lol...