ٍٍSee the explanation below:

* repudiatory breach of contract is a breach of contract that goes to the very root of the contract, evidences intention on the part of the party in breach that they no longer intend to be bound by an essential term of the contract.

Breach of a fundamental term in this way entitles the innocent party to accept the breach of contract (that is the repudiation of the contract) and bring the contract to end, or alternately affirm the contract.

If the innocent party wishes to accept the breach and terminate the contract, they must do so unequivocally and without undue delay. Delay in its own right is not fatal, provided the innocent party does not do anything to affirm the contract in the interim, and it is prudent to put it on the record that the innocent party objects to the conduct.

*اخلال مقدم بالواجب: _ anticipatory breach الاخلال بالواجب قبل أن يحل اداؤه.
وهذا ما ينكشف عنه الكلام أو الفعل الدال على نية الشخص بأن يتخلى عن تعهد مستقبل، من ذلك تصريحه مثلا، بأنه لن يقوم أو لن يستطيع القيام بواجب تعاقدي معين. ومن اعمال الافلاس ما يصح ادخاله في هذا الباب من الاخلال.

Regards!

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Note added at 10 hrs (2008-05-10 00:21:11 GMT)
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ٍSee also this:

A fundamental breach of a contract, sometimes known as a repudiatory breach, is a breach so fundamental that it permits the distressed party to terminate performance of the contract, in addition to entitling that party to sue for damages.

http://www.answers.com/topic/fundamental-breach?cat=biz-fin

بالنسبة للكلمات التي ظهرت كرموز كانت كالتالي:

للشركة الحق في الإخلال الأساسي (من حيث عدم الإلتزام) بالعقد والإخلال بالواجب قبل أن يحل أداؤه

The breaking of an agreement prior to the duty of performance

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Note added at 19 hrs (2008-05-10 09:44:37 GMT)
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A party to a contract in anticipation of breaching its terms and conditions decides to repudiate the contract calling into question the contracts legal validity rather than subjecting itself to any punitive measure for breach of contract, taking the gamble of finding a legal loophole that voids the whole contract.

هذه حالة إخلال بالعفد أو مخالفة شروط العقد تمهيداً لفسخه قبل الموعد المحدد لانتهاء العقد في البند المعنون مدة العقد