Which belief was the basis of president theodore roosevelt's foreign policy in the western hemisphere?

Teddy Roosevelt's foreign policy was built around the African proverb "Speak softly and carry a big stick." This proverb represented Roosevelt's idea that the American military should not boast about their capabilities to other nations. Rather, they should remain quiet about their power.

The "carry a big stick" part refers to the idea that the American military should be very strong. This includes well trained soldiers, up to date technology, etc.