▁an ▁article ▁published ▁on ▁March ▁ 1 3 , ▁ 2 0 1 2 , ▁he ▁discussed ▁" the ▁principal ▁cause ▁of ▁higher ▁oil ▁prices ", ▁con cluding ▁that ▁" a ▁fundamental ▁shift ▁in ▁the ▁structure ▁of ▁the ▁oil ▁industry " ▁has ▁occurred ▁because ▁of ▁" the ▁disapp earance ▁of ▁relatively ▁accessible ▁and ▁in exp ensive ▁pet role um ", ▁and ▁that ▁countries ▁will ▁have ▁to ▁grasp ▁for ▁the ▁harder ▁oil ▁in ▁the ▁future . ▁In ▁another ▁article , ▁he ▁continues ▁this ▁th esis ▁and ▁suggests ▁that ▁san ctions ▁on ▁Iran ▁make ▁not ▁only ▁Iran ians ▁suffer , ▁but ▁also ▁those ▁that ▁buy ▁oil ▁from ▁Iran . ▁That ▁same ▁month , ▁K lare ▁noted ▁the ▁sensitive ▁sp ots ▁of ▁conflict ▁in ▁the ▁" Ge o - energy ▁era ". ▁They ▁include ▁the ▁Stra it ▁of ▁H orm uz , ▁the ▁East ▁and ▁South ▁China ▁Se as , ▁the ▁C asp ian ▁Sea ▁bas in , ▁and ▁the ▁Ar ctic ▁polar ▁region . ▁In ▁another ▁article ▁in ▁ 2 0 1 1 , ▁K lare ▁expanded ▁his ▁th esis ▁to ▁something ▁more ▁radical . ▁He ▁noted ▁that ▁America ▁and ▁oil ▁were ▁falling ▁together . ▁ ▁Bibli ography ▁▁ ▁War ▁Without ▁End : ▁American ▁Pl anning ▁for ▁the ▁Next ▁V iet n ams ▁( New ▁York : ▁Kn opf , ▁ 1 9 7 2 ). ▁( Trans l ations ▁in ▁Italian , ▁Norwegian , ▁and ▁Spanish .) ▁ ▁Supp lying ▁Re pression ▁( New ▁York : ▁Field ▁Foundation , ▁ 1 9 7 8