The practices became so prevalent that even Conservative governments elected after the initial wave of nationalisations in the late 1940s kept them. However, during the 1970s, massive strikes by unions (see the Three-Day Week and Winter of Discontent) and other economic woes, such as the 1973 oil crisis, almost ground the British economy to a halt. Thatcher, an ardent admirer of Hayek, began . While her results were initially mixed, the Falklands War brought on a nationalistic fervor that kept Thatcher in office long enough to keep her reforms in place. Even when the Labour Party later came back to power, it did not attempt to challenge the key principles of Thatcherism.