; ▁rather ▁than ▁peace ▁interrupted ▁by ▁occas ional ▁conflict , ▁the ▁normal ▁pattern ▁was ▁seen ▁to ▁be ▁conflict ▁interrupted ▁by ▁occas ional , ▁temporary ▁tr uce ▁( h ud na ). ▁True ▁peace ▁( ṣ ul ḥ ) ▁could ▁only ▁come ▁when ▁the ▁enemy ▁accepted ▁Islam ▁or ▁trib ut ary ▁status ." ▁ ▁Both ▁as ▁governor ▁of ▁Sy ria ▁and ▁later ▁as ▁cal i ph , ▁Mu aw iy ah ▁I ▁( r . ▁ 6 6 1 – 6 8 0 ) ▁was ▁the ▁driving ▁force ▁of ▁the ▁Muslim ▁effort ▁against ▁By z ant ium , ▁especially ▁by ▁his ▁creation ▁of ▁a ▁fleet , ▁which ▁challeng ed ▁the ▁By z antine ▁n avy ▁and ▁ra ided ▁the ▁By z antine ▁islands ▁and ▁coast s . ▁To ▁stop ▁the ▁By z antine ▁har ass ment ▁from ▁the ▁sea ▁during ▁the ▁Arab - By z antine ▁Wars , ▁in ▁ 6 4 9 ▁Mu aw iy ah ▁set ▁up ▁a ▁n avy , ▁man ned ▁by ▁Mon oph ys it ise ▁Christian , ▁Co pt ▁and ▁Jacob ite ▁Sy rian ▁Christian ▁sail ors ▁and ▁Muslim ▁troops . ▁This ▁resulted ▁in ▁the ▁defeat ▁of ▁the ▁By z antine ▁n avy ▁at ▁the ▁Battle ▁of ▁the ▁M asts ▁in ▁ 6 5 5 , ▁opening ▁up ▁the ▁Mediter rane an . ▁The ▁shock ing ▁defeat ▁of ▁the ▁imperial ▁fleet ▁by ▁the ▁young ▁Muslim ▁n avy ▁at ▁the ▁Battle ▁of ▁the ▁M asts ▁in ▁ 6 5 5 ▁was ▁of ▁critical ▁importance : ▁it ▁opened ▁up ▁the