Cars drive past the Kremlin along the Moscow River last December. Foreign automakers had been ramping up production in Russia, but the country's economic woes have caused car sales to drop sharply. Several foreign automakers have cut back production, and General Motors is pulling out of Russia. Alexander Zemlianichenko/AP hide caption

itoggle caption Alexander Zemlianichenko/AP

A Ukrainian serviceman walks in the village of Pisky in the region of Donetsk controlled by Ukrainian forces on Feb. 26. Oleksandr Ratushniak/AFP/Getty Images hide caption

itoggle caption Oleksandr Ratushniak/AFP/Getty Images

Workers stand next to a gas pipeline not far from the central Ukrainian city of Poltava in June 2014. Ukraine imports much of its gas from Russia, which is once again threatening to cut off supplies in a dispute over payments. Sergei Supinsky/AFP/Getty Images hide caption

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On Sunday, thousands of people gathered in Maidan to mark the first anniversary of anti-government demonstrations that left scores of protesters dead. Geovien So/Barcroft Media/Landov hide caption

itoggle caption Geovien So/Barcroft Media/Landov

Russian soldiers guard the entrance to the Ukrainian military base in Perevalne, Crimea, last March. Russia was criticized widely internationally after seizing the region. Now Russian lawmakers are considering a bill that says Crimea was illegally given to Ukraine in 1954 and should have been part of Russia all along. Ivan Sekretarev/AP hide caption

itoggle caption Ivan Sekretarev/AP