Pressure is mounting for the European Union to do the unthinkable: cut off imports of Russian oil and gas, which have been flowing to the West through all manner of crises for decades.
Why it matters: No one quite knows what happens economically if the EU is cut off from its supply. "It's not something that's been in the models because it was never considered an option," said Antoine Halff, senior research scholar at the Center on Global Energy Policy, Columbia University.
