US military bases can also be a disaster. The one in Pituffik started with ethnic cleansing, led to a nuclear disaster, and ended up not defending anyone. Around the world, local populations experience a lot of troubles from American bases, as they tend to be exterritorial, while their personel doesn't abide by national laws.
Also, why would you let the enemy build bases in your territory?
US military bases can also be a disaster. The one in Pituffik started with ethnic cleansing, led to a nuclear disaster, and ended up not defending anyone. Around the world, local populations experience a lot of troubles from American bases, as they tend to be exterritorial, while their personel doesn't abide by national laws.
Also, why would you let the enemy build bases in your territory?