Is New Start Compatible with the U.S.–U.K. Mutual Defence Agreement?

Ted Bromund /

Obama and Medvedev sign new START

The Special Relationship between the U.S. and Britain has many facets, but at its core is close cooperation in the military and intelligence realms. And at the heart of our military cooperation is the U.S.–U.K. Mutual Defence Agreement.

Signed in 1958, and renewed every 10 years—most recently in 2004—the agreement provides for Anglo–American collaboration in nuclear technology. It provides the legal basis for the transfer to Britain of U.S.-made Trident II missiles—the launch platform for Britain’s nuclear deterrent—and for the much broader sharing of nuclear information between the two countries.

Because the agreement concerns exceptionally sensitive information and technologies, it imposes extremely tight security controls on both parties. Article V(c) of the 1958 agreement states:

Except as may be otherwise agreed for civil uses, the information communicated or exchanged, or the materials or equipment transferred, by either Party pursuant to this Agreement shall be used by the recipient Party exclusively for the preparation or implementation of defense plans in the mutual interest of the two countries. (more…)