Rex Tillerson: “Mr. President, you can't talk that way.”

Russia has often employed malicious tactics against the U.S. and Europe to drive us apart, and serially harassing and intimidating diplomats are not the behaviors of a responsible nation.

Enhancing energy security by ensuring access to affordable, reliable, diverse, and secure supplies of energy is fundamental to national security objectives.

The point is, if it's their intention to interfere, they are going to find ways to do that.

I know the Senate's desire to understand the United States' legal basis for military action is grounded in your constitutional role related to foreign policy and national security matters.