Media reports say the Obama tapped the phones of 4 world leaders . Key questions have emerged about what U.S. knew , and his response . In a USA Today op-ed published last week , Obama 's homeland security and counterterrorism adviser Lisa Monaco conceded that recent `` disclosures have created significant challenges in our relationships . '' Leaders in Latin America and Europe demand answers , say they 're outraged .
Media reports say the Obama tapped the phones of 4 world leaders . Key questions have emerged about what U.S. knew , and his response . Leaders in Latin America and Europe demand answers , say they 're outraged .