Why do you say we had "success" against large empires? The Assyrians conquered us in the 7th century BC, destroying 10 of the 12 tribes of Israel. The Babylonians conquered us around 600 BC and destroyed the temple. Then it was the Persons, Greeks, Egyptians and Romans. Then it was the Arabs, the Crusades, the Mongols, the Mamluks, the Ottomans.
Our country has always been fought over. We believe that our faith in God and community is more important than a piece of land. Over time we emigrated into Europe. We were OFTEN persecuted because we wore close-knit, worked hard and were successful, and were not Christian. The only thing new about Nazi Germany is that anti-semitism was institutionalized and used as a political tool.
We beat the Arabs in the early conflicts for the modern state of Israel because we were organized and unified with a common God, common purpose, and community....and we all prepared and fought in the early years...our backs were to the wall so to speak. Even today military service is required of both you men and women over the age of 18. As a percentage of GDP our military spending has been some of the highest in the world.