▁develop ments . ▁There ▁was ▁never ▁any ▁question ▁that ▁Ott awa ▁would ▁risk ▁its ▁standing ▁in ▁this ▁new ▁Commonwealth ▁by ▁trying ▁to ▁ease ▁Australia ' s ▁growing ▁isol ation . ▁By ▁ 1 9 6 1 , ▁for ▁instance , ▁Canada ▁was ▁prepared ▁to ▁help ▁force ▁South ▁Africa ▁out ▁of ▁the ▁Commonwealth ▁despite ▁clear ▁indic ations ▁that ▁such ▁action ▁would ▁stra in ▁its ▁relations ▁with ▁Australia . ▁Similarly , ▁Ott awa ▁rejected ▁M enz ies ' ▁efforts ▁in ▁the ▁spring ▁of ▁ 1 9 6 3 ▁to ▁fost er ▁closer ▁bil ater al ▁relations ▁l est ▁other ▁members ▁of ▁the ▁Commonwealth , ▁particularly ▁India ▁and ▁Pakistan , ▁feel ▁ex cluded . ▁ ▁The ▁ 1 9 6 0 s ▁developed ▁another ▁un com fort able ▁factor ▁in ▁relations ▁between ▁the ▁two ▁countries : ▁the ▁war ▁in ▁Vietnam . ▁Australia ▁had ▁come ▁to ▁depend ▁on ▁the ▁United ▁States ▁in ▁the ▁South ▁Pacific ▁for ▁its ▁own ▁security ▁as ▁it ▁was ▁the ▁for em ost ▁Western ▁power ▁in ▁the ▁pac ific . ▁This ▁new ▁relationship ▁was ▁initially ▁root ed ▁in ▁the ▁ 1 9 5 1 ▁Pacific ▁Security ▁Ag re ement ▁and ▁subsequently ▁defined ▁through ▁their ▁common ▁membership ▁in ▁SE AT O . ▁Australia ▁increasing ly ▁shared ▁Washington ' s ▁desire ▁to ▁cur b ▁commun ism ▁in ▁Asia , ▁and ▁slowly ▁found ▁itself ▁drag ged ▁into ▁the ▁qu ag m ire ▁of ▁sout heast ▁Asia . ▁By ▁ 1 9 6 7 , ▁the ▁few ▁advis ers ▁Australia ▁had ▁sent ▁to ▁South ▁Vietnam ▁had ▁basically ▁become