announce that outright ban on russian oil, all of them have a cost of course for the countries imposing them. and if this continues and going ahead long-term, there is a risk of deglobalization, and all these supply routes being disrupted bringing a sort of global recession on. there is a cost right now, the calculation being made by the west it is worth paying if that pressure is brought to bear because of what's happening on the ground in ukraine. >> melissa bell, thank you so much. so what do these developments mean in terms of wider global diplomacy? let's bring in robert english, director of central european studies in southern california, and he joins us in los angeles. thanks so much for being here with us. do you have confidence in the ongoing diplomatic efforts? putin seems to favor turkey and israel as regulators. but even those recent talks have gone almost nowhere, i guess. you think offers by turkey and