Macmillan met with President John F. Kennedy and brokered the Nassau Agreement. Macmillan rejected offers of other systems, and insisted that the UK needed to purchase Polaris submarine-launched ballistic missiles. These represented more advanced technology than Skybolt, and the US was not inclined to provide them except as part of a Multilateral Force within the North Atlantic Treaty Organisation (NATO). In the end, Kennedy did not wish to see Macmillan's government collapse, which would imperil Britain's entry into the European Economic Community (EEC), so a face-saving compromise was reached: the US agreed to provide the UK with Polaris missiles, which would be assigned to NATO, and could be used independently only when "supreme national interests" intervened.