[1] Some right-libertarians, including Murray Rothbard and Walter Block, hold the view that the non-aggression principle is an irreducible concept: it is not the logical result of any given ethical philosophy, but rather is self-evident as any other axiom is.
Rand argued that liberty was a precondition of virtuous conduct,[2] but that her non-aggression principle itself derived from a complex set of previous knowledge and values.
Rothbard and other anarcho-capitalists hold that government requires non-voluntary taxation to function and that in all known historical cases, the state was established by force rather than social contract.
[4] Voluntary financing notwithstanding, some libertarians consider that a government would by definition still violate individual rights (commit aggression) by enforcing a monopoly over a given territory.
Later Objectivists, such as Leonard Peikoff, David Kelley, and Yaron Brook, have continued to hold pro-Israel positions since Rand's death.
[10][11] United States Libertarian Party's first candidate for President John Hospers credited Rand as a major force in shaping his own political beliefs.
[15] Rothbard would later become a particularly harsh critic of Rand, writing in The Sociology of the Ayn Rand Cult: The major lesson of the history of the [Objectivist] movement to libertarians is that It Can Happen Here, that libertarians, despite explicit devotion to reason and individuality, are not exempt from the mystical and totalitarian cultism that pervades other ideological as well as religious movements.
[16]Some Objectivists have argued that Objectivism is not limited to Rand's own positions on philosophical issues and are willing to work with, and identify with, the libertarian movement.
[18] Responding to a question about the Libertarian Party of the United States in 1976, Rand said: The trouble with the world today is philosophical: only the right philosophy can save us.
But this party plagiarizes some of my ideas, mixes them with the exact opposite—with religionists, anarchists and every intellectual misfit and scum they can find—and call themselves libertarians and run for office.