The notion that Israel was created by force is just not true. Jews were always a part of historical Palestine, and most of the land they inhabited was legally bought, by bodies like the JNF, up until the war of 1948. That war, started by the Arabs, came as a result of the League of Nations declaration of the formation of Israel.
It's important to stress that there was never a Palestinian country, nor a cohesive Palestinian nation ahead of the formation of Israel. That historical land was controlled by various empires, and people used to come and go through it quite freely.