David Miranda, the partner of Guardian journalist Glenn Greenwald, says he was questioned about his entire life after being detained for nine hours under anti-terror laws at London's Heathrow airport. Greenwald, who met David Miranda at Rio de Janeiro's international airport, said as a journalist he would not be silenced by this police action against his partner and vowed to publish many more spying documents. Brazil's foreign minister says the detention was 'unjustified'