Turkish and UN officials say they expect to sign a deal with Russia and Ukraine Friday to allow Ukraine to resume vital exports. The country is one of the world’s largest providers of grain and oil. Meanwhile, the battles grind on. Russia this week said its goals had expanded to the country’s south and southeast, as the war of attrition continues in the eastern Donbas. Nick Schifrin reports. Stream your PBS favorites with the PBS app: https://to.pbs.org/2Jb8twG Find more from PBS NewsHour at https://www.pbs.org/newshour Subscribe to our YouTube channel: https://bit.ly/2HfsCD6 Follow us: Facebook: http://www.pbs.org/newshour Twitter: http://www.twitter.com/newshour Instagram: http://www.instagram.com/newshour Subscribe: PBS NewsHour podcasts: https://www.pbs.org/newshour/podcasts Newsletters: https://www.pbs.org/newshour/subscribe