Answer:
The Bush Doctrine holds that enemies of the US use terrorism as a war of ideology against the nation. The responsibility of the US is to protect itself by promoting democracy where the terrorists are located so as to undermine the basis for terrorist activities.
Step-by-step explanation:
The Bush Doctrine was the idea by Bush that America can treat all countries that support terrorists against the U.S. as enemies. It also asserts the right that the U.S. can take preemptive action against nations that it feels might pose terrorist threats.