Former special counsel Robert Mueller’s highly anticipated testimony kicks off Wednesday morning Source

Massive demonstrations sparked by governor’s obscenity-laced online chat and federal corruption charges leveled against his administration Source

Months after Donald Trump called for U.S. troops to withdraw from Syria, some are still there. David Martin traveled to Syria with the top U.S. military commander for the Middle East and explains what they’re doing today. Source

Tehran claims the Iranian nationals recruited by the CIA were working at sensitive nuclear and military sites; Trump calls the report “totally false” Source

Colon cancer is the third most common cancer in the U.S. Source

Donald Trump is denying Iran’s claim that it arrested 17 people who were allegedly spying for the CIA. The allegation comes amid increased tensions with Iran, after it seized a British oil tanker. Imtiaz Tyab reports. Source

A new CBS News poll finds most Americans disagree with Donald Trump’s racist tweets aimed at four congresswomen known as the “Squad.” But the president continues to target the group. Ben Tracy reports. Source

In a tweet, Michael Key accused DeMarcus Crews, an assistant dean, of repeated unwanted touching Source

Here’s a look at the top stories making headlines on the “CBS Evening News with Norah O’Donnell.” Source

Iran is alleging 17 Iranian nationals were sharing sensitive information with American handlers Source