NATO stands for North Atlantic Treaty Organization. They keep political and military peace as best they can as well as helping out with trade relations. This is a slideshow based on the relationship between the Ukraine and NATO.
https://docs.google.com/presentation/d/1H33inlvwdwrKCa7yHuaUFTDq8_E6DRiIjUoZvjaeR5g/edit?usp=sharing