Matthew Dallek, a political historian and professor at George Washington University, joins CBSN’s “Red & Blue” to discuss his Washington Post op-ed that looks at the evolution of conspiracy theories in American politics and how recently the Republican Party helped them become more mainstream. Source

A Tennessee state lawmaker is proposing a bill that would bar transgender student-athletes from playing on sports teams that don’t match their birth gender. WTVF-TV’s Kelsey Gibbs reports. Source

Joe Biden and other Democratic presidential candidates are speaking out about the rising tensions with Iran and condemning President Trump’s handling of the situation. CBSN political reporter Caitlin Huey-Burns and Politico national correspondent Natasha Korecki join CBSN’s “Red & Blue” with the latest on the 2020 race. Source

The White House said President Trump is aware of the attacks on the Al Asad Air Base in Iraq and is monitoring the situation closely. Weijia Jiang has more. Source

CBS News senior national security correspondent David Martin joins CBSN with the latest on Iran’s missile attack on bases housing U.S. military forces in Iraq, and what the consequences could be as the Trump administration weighs its response. Source

Iran’s supreme leader made threats about retaliating for a strike that killed the country’s top military leader. Now, Iran is claiming responsibility for strikes at air bases in Iraq. Elizabeth Palmer reports from Tehran. Source

Top congressional leaders briefed on Soleimani; Sanders and Biden lead New Hampshire polls. Source

Iran has taken responsibility for missile launches that hit two military bases in Iraq that house U.S. troops. Former Navy SEAL Dave Sears says the Trump administration could have a “completely disproportionate response” to their attacks. He joined CBSN’s Tanya Rivero with analysis. Source

Around the world, people have watched the devastation caused by wildfires in Australia. Celebrities and good Samaritans are rallying to save homes and animals. Jamie Yuccas explains. Source

Iran has launched “more than a dozen” ballistic missiles against two Iraqi military bases housing U.S. forces. And now, the response to that action is being closely watched. Robbie Gramer, diplomacy and national security reporter at Foreign Policy, joins CBSN’s Tanya Rivero with analysis. Source