, ▁his ▁interactions ▁with ▁many ▁German ▁arist ocr ats ▁opposed ▁to ▁the ▁Naz i ▁regime ▁( some ▁of ▁whom ▁were ▁within ▁his ▁immediate ▁family ), ▁led ▁to ▁his ▁increased ▁dis ill usion ment ▁with ▁that ▁movement ▁to ▁the ▁extent ▁that ▁towards ▁the ▁end ▁of ▁his ▁life ▁he ▁no ▁longer ▁supported ▁it . ▁ ▁Research ▁ ▁The ▁Stack el berg ▁leadership ▁model ▁is ▁a ▁model ▁of ▁a ▁du opol y . ▁In ▁a ▁standard ▁Stack el berg ▁du opol y ▁situation ▁there ▁are ▁two ▁fir ms ▁in ▁a ▁market . ▁The ▁number ▁of ▁fir ms ▁is ▁restricted ▁to ▁two ▁by ▁assuming ▁bar riers ▁to ▁entry . ▁Each ▁firm ▁is ▁taking ▁into ▁account ▁its ▁compet itors ' ▁decision ▁on ▁the ▁quantity ▁produced . ▁Un like ▁in ▁the ▁Cour not ▁game ▁fir ms ▁act ▁sequ entially , ▁with ▁the ▁leader ▁choosing ▁a ▁quantity ▁first . ▁The ▁follow er ▁obser ves ▁the ▁decision ▁of ▁the ▁leader ▁and ▁cho oses ▁his ▁quantity . ▁ ▁There ▁are ▁some ▁further ▁constraints ▁upon ▁the ▁sust aining ▁of ▁a ▁Stack el berg ▁equilibrium . ▁The ▁leader ▁must ▁know ▁ex ▁ante ▁that ▁the ▁follow er ▁obser ves ▁his ▁action . ▁The ▁follow er ▁must ▁have ▁no ▁means ▁of ▁comm itting ▁to ▁a ▁future ▁non - Stack el berg ▁follow er ▁action ▁and ▁the ▁leader ▁must ▁know ▁this . ▁Indeed , ▁if ▁the ▁' follow er ' ▁could ▁commit ▁to ▁a ▁Stack el berg ▁leader ▁action ▁and ▁the ▁' le ader ' ▁knew ▁this , ▁the ▁leader ' s ▁best ▁response ▁would ▁be ▁to