Citing US intelligence sources, the Bild am Sonntag daily reported Sunday that Obama was informed of the spying programme by National Security Agency (NSA) director Keith Alexander in 2010, but did not ask that the programme be ended and even requested a full report on the chancellor. Obama, however, assured Merkel during a phone conversation last Wednesday that he was not aware of the spying programme and would have stopped it if he had known, media reports said.