Answer:
peripheral-route processing
Explanation:
Peripheral route processing or better known as peripheral route to persuasion is the idea of a message evaluated on the basis of anything other than the central knowledge of the message. It occurs when an individual is persuaded by a surface level characteristics instead of the actual content. As per the question, the president is appealing to trust him on the basis of his position instead of factual information about the war, therefore he is using peripheral route processing.
