Sanctions have been effective at crippling the Russian economy. That's the conclusion of a new 118-page paper from Yale's Jeffrey Sonnenfeld and 18 c0-authors.
Why it matters: The big question about Russia sanctions is whether they have teeth, if they exclude Russian oil and gas. While official Russian statistics suggest the economy is using its oil and gas revenues to withstand the effects of sanctions, Sonnenfeld's paper says that the official Russian statistics are lies.