The experiences of women in war have been diverse. Historically women have played more than major roles on the home front. Citing Queen Boudica, Queen Elizabeth I, Catherine de' Medici, Catherine the Great, Maria Theresa, Golda Meir, Indira Gandhi, Aba women and Margaret Thatcher, British historian Andrew Roberts concludes: "The witness of history is virtually uniform in the willingness of female decision makers to fight, once they have decided the causes just and/or necessary."