Russia will fight back against any new U.S. sanctions over the crisis in Ukraine, Russia's Deputy Foreign Minister Sergei Ryabkov said Saturday.
Russia's War Against Ukraine
Washington Times: Russia vows retaliation for any new United States’ sanctions
People pass a currency exchange office in central Moscow on September 15, 2014. The Russian ruble fell to a historic low 38.04 against the US dollar after the West imposed sanctions over Ukraine.