Reading an article I was wondering why so much violence exists in Sinai when...

Muhammad decreed to "the Monks of Mount Sinai, and … Christians in general ...whenever any one of the monks in his travels shall happen to settle upon any mountain, hill, village, or other habitable place, on the sea, or in deserts, or in any convent, church, or house of prayer, I shall be in the midst of them... No one shall bear arms against them, but, on the contrary, the Muslims shall wage war for them."