Sentence:  18. GNM [Guardian News & Media Limited] shall not be liable for any failure to comply with its obligations where the failure is caused by something outside its reasonable control. Such circumstances shall include, but not be limited to, weather conditions, fire, flood, hurricane, strike, industrial dispute, war, hostilities, political unrest, riots, civil commotion, inevitable accidents, supervening legislation or any other circumstances amounting to <WSD>force majeure</WSD>. 
Meaning of the word marked with <WSD> tags:  An unavoidable catastrophe, especially one that prevents someone from fulfilling a legal obligation.