The proportion of Australian voters naming Indonesia as a security threat reached one in five after the Santa Cruz massacre in 1991 , subsequently increasing to three in ten following the 1999 crisis in East Timor . In 2004 , an Australian Strategic Policy Institute survey showed 29 % of those polled identified Indonesia as ' most likely ' to pose a security threat to Australia in the future , a slight decline from the figure of 31 % recorded in 2001 . In all surveyed periods , Indonesia was identified as Australia 's foremost security threat
Santa Cruz massacre
Santa Cruz massacre
Australia–Indonesia relations