It’s been 18 months since Russia invaded Ukraine. No true negotiations have happened. As the stalemate continues, what role should the United States play in the fight?

This week on “Matter of Opinion,” the hosts discuss how the war is playing out at home and why the G.O.P. seems more interested in invading Mexico than defending Ukraine.

Plus, a trip back in time to a magical land of sorcerers and “Yo! MTV Raps.”

(A full transcript of the episode will be available midday on the Times website.)

Mentioned in this episode:

  • “An Unwinnable War,” by Samuel Charap in Foreign Affairs

  • “The Runaway General,” by Michael Hastings in Rolling Stone

  • “First Person: An Astonishingly Frank Self-Portrait by Russia’s President Vladimir Putin,” by Vladimir Putin

Thoughts? Email us at matterofopinion@nytimes.com.

Follow our hosts on Twitter: Michelle Cottle (@mcottle), Ross Douthat (@DouthatNYT), Carlos Lozada (@CarlosNYT) and Lydia Polgreen (@lpolgreen).

“Matter of Opinion” is produced by Phoebe Lett, Sophia Alvarez Boyd and Derek Arthur. It is edited by Stephanie Joyce. Mixing by Pat McCusker. Original music by Pat McCusker, Carole Sabouraud and Sonia Herrero. Our fact-checking team is Kate Sinclair, Mary Marge Locker and Michelle Harris. Audience strategy by Shannon Busta and Kristina Samulewski. Our executive producer is Annie-Rose Strasser.