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For interests that are vital to the U.S. - that is, essential for our survival and wellbeing - the U.S. should be prepared to use military force - including unilaterally, if necessary.

"Central Challenges of U.S. Foreign Policy: Five Questions with Graham Allison". Interview with Ali Wyne, bigthink.com.
For interests that are vital to the U.S. - that is, essential for our survival and wellbeing - the U.S. should be prepared to use military force - including unilaterally, if necessary.