How can the president influence the establishment of us foreign policy?

Influence of the president on the establishment of US foreign policy:

The president in the "United States of America" is very influential in terms of the establishment of foreign policies. The president has responsibility and power in foreign as well as in defense policies.

The president has enough powers to make "treaties" to be approved by the senate in America. As he is head of the state, he is responsible for maintaining good relations with other nations. The president will speak for the country's benefits and welfare to the other world leaders and at last, appoints an ambassador to represent the nation internationally.