In the U.S. Ambassador to NATO Harlen Cleveland's notes on his meeting with Secretary Rusk, Cleveland details Rusk's thoughts about Soviet interest in the NPT. According to the Secretary, the “Soviets should have no real difficulty in finding a common interest with us in signing a treaty which enshrines [the] two self-denying provisions” of no-transfer to non-nuclear weapons states and “no relinquishment of control by the US over US warheads.”