Russia and Ukraine signed two separate agreements allowing Ukraine to resume shipments of grain supplies across the Black Sea as Russia lifts its naval blockade. But this morning, Russian missiles are reportedly striking a key port city. Holly Williams has more. #ukraine #russia #worldnews "CBS Saturday Morning" co-hosts Jeff Glor, Michelle Miller and Dana Jacobson deliver two hours of original reporting and breaking news, as well as profiles of leading figures in culture and the arts. Watch "CBS Saturday Morning" at 7 a.m. ET on CBS and 8 a.m. ET on the CBS News app. Subscribe to "CBS Mornings" on YouTube: https://www.youtube.com/CBSMornings Watch CBS News live: https://cbsn.ws/1PlLpZ7c​ Download the CBS News app: https://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: https://cbsn.ws/1RqHw7T​ Try Paramount+ free: https://bit.ly/2OiW1kZ For video licensing inquiries, contact: [email protected]