After a disastrous defeat in northern Ukraine, Russia has begun a high-stakes battle for the east, while Western allies arm Ukrainian fighters determined to stave off the attack.After Moscow’s pivot, what lies in store in the coming weeks?Guest: Eric Schmitt, a senior writer covering terrorism and national security for The New York Times.Want more from The Daily? For one big idea on the news each week from our team, subscribe to our newsletter. Background reading: President Vladimir V. Putin of Russia defined a more limited military goal: taking control of the Donbas region in the east of Ukraine — not the whole country.Russia reorganized the command of its flagging offensive, selecting for the mission a general accused of ordering strikes on civilian neighborhoods in Syria.For more information on today’s episode, visit nytimes.com/thedaily. Transcripts of each episode will be made available by the next workday.