How do you run a secret intelligence service in an open democracy?

The prime targets of the secret intelligence service were leading Soviet personalities.

Prior to the present war, the United States had no foreign secret intelligence service.

A ghastly, tragic accident, of course, but nothing to worry the secret intelligence service.

He was just completing a year-long stint with MI6, Britain's secret intelligence service, when he died.

This was a dilemma for the chief of a secret intelligence service, whose operators depended on deceit to succeed.

The collapse of the CIA as a secret intelligence service began on the day Helms left and James Schlesinger arrived at headquarters.

They're the branch of the secret intelligence services that deals with occult threats.

Until then, the British government had formally denied the existence of the Secret Intelligence Service.

Britain's foreign intelligence effort was first organised in 1909, when the Secret Intelligence Service was formed.

September 2002: The British government publishes a report on Iraq's weapons' capability drafted by the Secret Intelligence Service.

The Secret Intelligence Service, MI6, operates abroad, dealing with threats overseas and gathering intelligence mainly from human sources.

Over the past several months, the British Secret Intelligence Service had obtained new details of Iran's covert nuclear weapons program.

And this, I believe, is the first public speech given by a serving chief of the British Secret Intelligence Service.

Once the body is identified as an operational Secret Intelligence Service (SIS) officer, different rules come into play.

Witness K, an Australian Secret Intelligence Service agent, became concerned about the operation, which diverted resources from the Bali bombings.