The
United Kingdom – United States of America Agreement (
UKUSA, ) is a multilateral agreement for cooperation in
signals intelligence between the
United Kingdom, the
United States,
Canada,
Australia, and
New Zealand. The alliance of intelligence operations is also known as
Five Eyes. In classification markings this is abbreviated as FVEY, with the individual countries being abbreviated as GBR, USA, CAN, AUS, and NZL respectively.