The US Director of National Intelligence James Clapper has said that foreign allies regularly conduct espionage activities against American leaders and intelligence services.
His comments came in response to a series of questions during a hearing before the House of Representatives Intelligence Committee.
Mr Clapper also said spying on foreign leaders was a basic tenet of intelligence operations.
More top news
Following the promise of further powers for Scotland, David Cameron is now talking about a new deal for the other home nations.
The Suitsy: Man creates business suit onesie
Alex Salmond has announced his intention to end a 24-year career at the forefront of Scottish politics. Here is a brief look at his career.