1991 21stcentury economicaspects effectofterrorismon general geopolitics governmentpolicy handbooks hijackingofships history indianoceanregion indonesia international internationalcooperation internationalrelations internationalstatus internationaltrade law lawofthesea manuals maritimeterrorism merchantmarine military militarymissions nationalsecurity naval navalartandscience navalhistory navaloperations navalstrategy navies pacificocean persiangulfwar philippines piracy politicalaspects politicalscience prevention safetymeasures sea-power security securitymeasures shipping southchinasea strategicaspects strategy terrorism unitedstates weaponsofmassdestruction worldpolitics