Iraqi government forces are putting the squeeze on ISIS to reclaim the Northern city of Tikrit. Iranian militias are beefing up the Iraqi offense, which is earning praise from the Obama administration. Holly Williams tells us more from Iraq. Source

As new COVID cases are rising with the largest increase in newborns to 19-year-olds, Pfizer announced its vaccine is 100% effective at preventing symptomatic cases in children ages 12 to 15. Meg Oliver takes a look. Source

Representative Matt Gaetz, a Republican from Florida, denies having a relationship with a 17-year-old as the Justice Department investigates his alleged conduct with the girl. Major Garrett has the latest. Source

Boris Nemtsov was shot and killed as he walked over a bridge near the Kremlin. The head of Russia’s federal security service says the two arrested are suspected of carrying out the murder. Some think that the killing was ordered by the Kremlin because of Nemtsov’s criticism of President Vladimir Putin. Anthony Mason reports. Source

Preview: Mo Rocca talks with Tony, Grammy, and Emmy Award-winner Lin-Manuel Miranda about his new musical sensation, “Hamilton,” and why hip hop is the ideal vernacular for the story of founding father Alexander Hamilton. Source

The Emmy Award winner plays lawyer Alicia Florrick who is running for state attorney on the CBS drama. Margulies joins “CBS This Morning” for a preview of the show and returning to New York. Source

Nick Dietz compiles some of the week’s best viral videos, including a homemade luge track, Geico’s unskippable commercial and a fake Oscar winner prank. Plus, a pig gets in the way of commuters in Bradford, Maine. To see these videos in their entirety, click HERE. Source

The future queen plans on visiting the “Downton Abbey” set this week. And, a CBS star will shine forever on Hollywood’s walk of fame. Also, Maggie Smith checks back into the “Exotic Marigold Hotel.” Suzanne Marques has your Eye on Entertainment. Source

NASA has finally closed a gap in the litany of evidence connecting humans to climate change. Source

CBS News has confirmed that Harrison Ford was injured after the plane he was flying crashed on a Venice Beach golf course. He was the only one on the plane. He was reported in fair condition at a local hospital. Source