It's been 20 years since the U.S.-led invasion of Iraq. CBS News' Charlie D'Agata returns to Baghdad, where he was when the series of airstrikes known as "Shock and Awe" launched President George W. Bush's Operation Iraqi Freedom in the early hours of March 20, 2003. D'Agata speaks with U.S. Ambassador to Iraq Alina Romanowski who insists Iraq has turned a corner, and with the top U.S. general in charge of the 2,500 Americans who remain in the country. Nearly 4,500 American service members lost their lives by the time of the 2011 withdrawal. #news #iraq #baghdad Each weekday morning, "CBS Mornings” co-hosts Gayle King, Tony Dokoupil and Nate Burleson bring you the latest breaking news, smart conversation and in-depth feature reporting. "CBS Mornings" airs weekdays at 7 a.m. on CBS and stream it at 8 a.m. ET on the CBS News app. Subscribe to “CBS Mornings” on YouTube: https://www.youtube.com/CBSMornings Watch CBS News: http://cbsn.ws/1PlLpZ7c Download the CBS News app: http://cbsn.ws/1Xb1WC8 Follow "CBS Mornings" on Instagram: https://bit.ly/3A13OqA Like "CBS Mornings" on Facebook: https://bit.ly/3tpOx00 Follow "CBS Mornings" on Twitter: https://bit.ly/38QQp8B Subscribe to our newsletter: http://cbsn.ws/1RqHw7T​ Try Paramount+ free: https://bit.ly/2OiW1kZ For video licensing inquiries, contact: [email protected]