"[It is the] iron law of every colonizing movement, a law which knows of no exceptions, a law which existed in all times and under all circumstances. If you wish to colonize a land in which people are already living, you must provide a garrison on your behalf. Or else – or else, give up your colonization, for without an armed force which will render physically impossible any attempts to destroy or prevent this colonization, colonization is impossible, not “difficult”, not “dangerous” but IMPOSSIBLE! … Zionism is a colonizing adventure and therefore it stands or falls by the question of armed force. It is important to build, it is important to speak Hebrew, but, unfortunately, it is even more important to be able to shoot – or else I am through with playing at colonialization."
January 1, 1970
https://en.wikiquote.org/wiki/Ze'ev_Jabotinsky