Operations designed to demonstrate u. s. resolve and involve the appearance of a credible military force in an attempt to defuse a situation that, if allowed to continue, may be detrimental to u. s. interests are known as

show of force

Explanation:

Based on the information provided within the question it can be said that this type of operation is known as a show of force. Like mentioned in the question this is a specific military operation used by the United States, in which they use credible military forces to either warn or intimidate an opponent in order to diffuse a situation that may otherwise escalate and cause serious problems.

answer; allows decision to stand;