The correct answer to this open question is the following.
Although there are no options attached we can say the following.
These terms are describing what international organization?
These terms are describing The North Atlantic Treaty Organization, better known as NATO.
NATO was created to combat the spread of Communism, is a multinational military alliance that was created as part of the Treaty of Belgium, and has its headquarters in Brussels, Belgium.
The North Atlantic Treaty Organization is a key strategic agreement, a military agreement indeed, signed by 30 European and North American countries to protect each other in case of military aggression or intervention. Among the countries that are part of NATO are the United States, Great Britain, Canada, France, Belgium, and Spain.