▁time , ▁target ed ▁killing ▁is ▁the ▁worst ▁possible ▁policy – except ▁for ▁all ▁the ▁others ." ▁ ▁Te aching ▁philosophy ▁David ▁is ▁regarded ▁as ▁an ▁effective , ▁enthus i astic ▁Professor . ▁In ▁ 1 9 8 9 , ▁David ▁became ▁the ▁first ▁member ▁of ▁the ▁Joh ns ▁Hop kins ▁fac ulty ▁to ▁receive ▁the ▁George ▁E . ▁O wen ▁teaching ▁award ▁twice . ▁He ▁won ▁the ▁award ▁for ▁a ▁third ▁time ▁in ▁ 1 9 9 8 . ▁In ▁an ▁interview ▁with ▁a ▁University ▁newspaper ▁following ▁his ▁rece ipt ▁of ▁the ▁award , ▁David ▁said , ▁" I ▁like ▁the ▁students ... Some one ▁once ▁asked ▁me , ▁' Do ▁you ▁want ▁to ▁spend ▁your ▁life ▁with ▁ 1 8 - ▁to ▁ 2 2 - year - olds ?' ▁and ▁I ▁kind a ▁do . ▁They ' re ▁enthus i astic , ▁they ' re ▁fun ▁and ▁they ' re ▁open - mind ed . ▁I ▁like ▁that ." ▁ ▁Works ▁ ▁Books ▁ ▁Cat ast roph ic ▁Con sequ ences : ▁Civil ▁Wars ▁and ▁American ▁Inter ests ▁ ▁" In ▁the ▁post - C old ▁War ▁world , ▁war ▁between ▁states ▁has ▁been ▁extra ordin arily ▁rare , ▁but ▁civil ▁war ▁and ▁armed ▁conflict ▁within ▁states ▁has ▁been ▁w ides p read . ▁Indeed , ▁in ▁the ▁last ▁two ▁dec ades , ▁fully ▁one - third ▁of ▁all ▁countries ▁have ▁end ured ▁some ▁form ▁of ▁civil ▁conflict . ▁In ▁this ▁so ber ing ▁study , ▁David ▁arg ues ▁that