First off, we need to make sure that we select countries that do not have any serious border disputes. Then, we say to this country, "we will guarantee your borders and in return we expect you to spend very little on your Armed Forces". Instead those countries can spend money on health, education, infrastructure and all the other things that governments should be spending their money on. The country concerned, would continue to have Armed Forces. These would be professionally trained, well-equipped, and deployed throughout the world on UN peacekeeping missions. They would take the place of British troops engaged in such missions.
We get to save lots of money on our international aid budget. This is because the value we create by guaranteeing the borders of the country is so large that it dwarfs any amount that we could generate by spending our own money on aid to that country.
But it gets better than that. If other countries join in and guarantee the borders of other Third World countries. then we can dramatically reduce the amount of money spent on arms in the Third World and redeploy that money to helping those countries and the people who live in them.
