The Iran crisis and its resolution have sent several powerful signals to the EU, Ukraine, and Russia. The first and perhaps most important signal is that economic sanctions work. The introduction and strengthening of sanctions in 2011 and 2012, respectively, demonstrated their effectiveness on a country quite reminiscent of Russia in its export structure. This also showed that shifting away from EU and U.S. markets is not an absolute panacea. The desire of Iran to escape isolation and its readiness to hold negotiations with the countries of the West ought to be a warning to Russia, which is currently following Iran’s pre-crisis path.