Concerns about the credibility of US nuclear deterrence generated Supreme Allied Commander Europe (SACEUR) General Lauris Norstadâs proposal for a NATO-controlled medium-range ballistic missile (MRBM) force. This lengthy report represented INRâs assessment of âpresent and future European interest in national or multinational nuclear weapons capabilities,â including the MRBM proposal, and the extent to which an âenhancement of NATO's nuclear roleâ could âdeter national or multinational European nuclear weapons programs.â