We remember from our history classes that some of the most extensively studied events from our past were wars, because they better reflect relationships between countries. Almost everyday, mass media reflect situations in different war zones. A war is a very significant event in a country's development, because aside from bringing a lot of destruction and casualties, they reflect the military powers of countries involved in the conflict.
Even though most countries are struggling to keep peace and maintain good relationships with their states, almost every country still invests a significant amount of its budget in defense, because it is the only way it can assure its integrity and can protect it from a possible exterior threat. In order to assure that, countries are competing and trying to achieve a higher level of military power. Please spend some time in visiting Insider Monkey's blog for more information about the most powerful countries in the world.