Indonesia summoned the Australian ambassador in Jakarta Friday over a "totally unacceptable" report that his embassy was among diplomatic posts in Asia being used in a vast American surveillance operation. China and Malaysia have demanded an explanation from Washington over claims that American embassies and consulates in the region were being used for monitoring phone calls and communications networks. The Sydney Morning Herald newspaper, amplifying an earlier report by the German magazine Der Spiegel, said earlier this week that a top-secret map leaked by fugitive intelligence analyst Edward Snowden showed 90 US surveillance facilities at diplomatic missions worldwide.