Anderson Cooper speaks with U.S. Ambassador to Ukraine Geoffrey Pyatt who describes the ceasefire between Ukraine and Russia as being under great stress.
Russia's War Against Ukraine
MSN: Pyatt says Putin can stop this violence (VIDEO)
Macon Phillips (L), the U.S. government's digital media guru, Ariel Cohen (C), visiting scholar at the Washington, D.C.-based Heritage Foundation and U.S. Ambassador to Ukraine Geoffrey R. Pyatt (R) share ideas.
