Golda Meir of Israel and Margaret Thatcher of Great Britain proved to be exceptions. There have been others throughout the world, not as famous, and not leaders of powerful countries, that have ruled and are ruling in their own spheres. It would be easy to research their names and countries.
And let’s not forget Indira Ghandi; Elizabeth I, Catherine the Great are at least as famous. Let’s not forget Queen Victoria who had one of the longest rules on record.