The last two Americans being held captive by North Korea have returned home.

Two American citizens are on their way home from North Korea after their release from prison there, US intelligence officials said.

The Guardian newspaper in London says a 29-year-old American who works as a contractor at the National Security Agency (NSA) is its source of leaks about the US government’s surveillance programmes.

The top US intelligence official has said cyberterrorism is the leading worldwide threat to the country’s security.

Iran is prepared to launch attacks inside the US, a top American intelligence official has claimed.

The use of full-body scanners and invasive pat-downs at airports around the US will not change for the "foreseeable future," Homeland Security Secretary Janet Napolitano said in an interview broadcast today.

US President Barack Obama said he wants the Senate to act quickly to approve his nominee to head the nation’s 16 spy agencies as he unveiled his choice today.

US president Barack Obama is today set to nominate James Clapper, the Pentagon’s top intelligence official, to oversee the nation’s 16 spy agencies.