World trade should be structured to providing security through interdependence as opposed to the current insecurity through dependence. Once the external support of repressive regimes ceases, dictators will quickly fall. There will then be many countries that will qualify for industrialization and protection of their security. If the world's power brokers are sincere, their financial power can do enormous harm to any country that chooses to break those sanctions. Once the rest of the world is disarmed, and all are therefore safe from attack, the weapons of mass destruction can be destroyed and adequate conventional weapons can be transferred to a world body to oversee peace.
People everywhere are basically good.
If they are aware, the leaders will follow. After all, the citizens have the vote and no one could remain a leader if they opposed such an obviously peaceful and productive course. Thus the war-governments have been governments to protect the elite, not the people. See Chapter Seven of this work.