Mr Greenwald obtained secret files from US whistle-blower Edward Snowden.
Brazil said data interception would represent an unacceptable violation of sovereignty. Mexico called for a probe.
- Brazil and Mexico probe claims US spied on presidents (mizantrop.info)
- Brazil and Mexico probe claims US spied on presidents (thenewsatday.wordpress.com)
- U.S.-Brazil tensions flare over report of spying on Brazil’s president (timescolonist.com)
- US spied on Brazil, Mexico presidents – report (newsinfo.inquirer.net)