The U.S. and Saudi Arabia have secured a $600 billion investment deal, including what's being called the largest defense sales agreement in history. ➡️ The $142 billion defense pact will see more than a dozen U.S. firms providing Saudi Arabia with warfighting equipment, as the U.S. seeks to boost Saudi defense and regional security.  ➡️ Trump’s tour now shifts to Qatar, where he’s aiming to secure further investments and deepen diplomatic ties. CNBC’s @Dan Murphy reports from Doha.