<p>This week on Face the Nation, the U.S. and Iran might be on the brink of a preliminary peace deal. As the nation's capital gets ready for a UFC fight night on president Trump's birthday, officials say a deal to end a war in the Middle East is imminent.&nbsp;<br>We get the latest in an exclusive interview with Secretary of Defense Pete Hegseth. Plus, we hear from two key Democrats on committees with oversight on national security, Senators Mark Warner and Mark Kelly.<br>Then, despite a sharp jump in the inflation rate, now at its highest level in three years, President Trump is optimistic the end of the war will also mean the end of surging energy prices.      </p><p>We get a reality check from one of Trump's top economic advisers from his first term, IBM Vice Chairman Gary Cohn.&nbsp;</p>