Deeply opposed to the Assembly, Lindsay had also grown disillusioned with unionism, and began to call for implementation of the ideas of W. F. McCoy, who had earlier called for Northern Ireland to be granted Dominion status. He felt that his plan, which he had intended to strengthen the Union, had been ignored and so moved to a more formal separation for Northern Ireland. In 1972 he published a paper, "Dominion of Ulster", in which he likened Irish Nationalists to the pre-Second World War Sudeten Germans and described the late Stormont era as Ulster's "Vichy period".