    Sentence 1: By’ this iinie; Bin Ladin was  well-known, and’ a senibr figure among  Islamist extremists; especially’ those « in  Egypt, the.“Arabian’-Peninsul  ‘Afghanistari-Pakistan: border         and:the:               gion:    Sentence:2: Av this-point Bin Ladem had  gained prominence: in the: radical Islamist  realm’ paiticularly- in a¥eas' like’ Pakistan;    ‘Afghanistan’ and Egypt.    