The furore over America's international spying web continues to escalate, with a Spanish newspaper claiming tens of millions of phone calls in the country have been monitored by the U.S. National Security Agency.
It is the latest allegation after British newspaper, the Guardian, last Thursday reported the U.S. has monitored the phone calls of at least 35 world leaders - a spying row that has shaken the U.S.'s allies in Europe.
