A war of succession is a type of intrastate war concerning struggle for power: a conflict about supreme power in a monarchy. It may become an interstate war if foreign powers intervene. A succession war may arise after (or sometimes even before) a universally recognised ruler over a certain territory dies (sometimes without leaving behind any (legal) offspring), or is declared insane or otherwise incapable to govern, and is deposed. Quite often such succession disputes can lead to long-lasting wars. Some wars of succession are about women's right to inherit (as we see in our current book). Often a ruler who has no sons, but does have one or more daughters, will try to change the succession laws so that a daughter can succeed him. Such amendments will then be declared invalid by opponents, invoking the local tradition.