A child plays near Russia-backed separatists in Donetsk, Ukraine, Monday. Separatists say they've begun to withdraw heavy weapons from the front line — a claim that monitors say they can't verify. Vadim Ghirda/AP hide caption

itoggle caption Vadim Ghirda/AP

Ukrainian troops ride on self-propelled artillery near Artemivsk, eastern Ukraine, Monday. A Ukrainian military spokesman says that separatist attacks are delaying Ukrainian forces' pullback of heavy weapons from the front line. Evgeniy Maloletka/AP hide caption

itoggle caption Evgeniy Maloletka/AP

A worker at Soulis Furs in Kastoria sorts through treated mink pelts. "We buy the pelts — minks or foxes or other animals — from North America and Scandinavia and send them for treatment in factories or abroad," says Makis Gioras of Soulis Furs in Kastoria. Joanna Kakissis/NPR hide caption

itoggle caption Joanna Kakissis/NPR

Britain's Foreign Secretary Philip Hammond and Secretary of State John Kerry deliver a statement at a news conference in London, today. Kerry said the two were going to discuss the possibility of further sanctions against Russia amid cease-fire violations in eastern Ukraine. Neil Hall/AP hide caption

itoggle caption Neil Hall/AP

In this photo provided by Britain's Royal Air Force, taken Oct. 29, 2014, a Russian military long-range bomber aircraft photographed by an intercepting RAF Typhoon flies in international airspace. Robyn Stewart/AP hide caption

itoggle caption Robyn Stewart/AP

Ukrainian soldiers repair their truck's bullet-shattered windshield Thursday, hit during their withdrawal from Debaltseve Wednesday. Brendan Hoffman/Getty Images hide caption

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Yakutsk, Russia is the world's coldest city: average winter temperatures hit -30 degrees. It's also the largest city built on permafrost. Amos Chapple hide caption

itoggle caption Amos Chapple

A Ukrainian military convoy stops on the road between the towns of Debaltseve and Artemivsk, Ukraine, on Saturday, hours before a cease-fire agreement is set to go into effect. Petr David Josek/AP hide caption

itoggle caption Petr David Josek/AP

A Ukrainian government soldier waves to an armored vehicle on a road near the town of Artemivsk, Ukraine, Friday. Fighting between Russia-backed separatists and Ukrainian government forces has continued despite the agreement reached by leaders of Russia, Ukraine, Germany and France in the Belarusian capital of Minsk Thursday. Petr David Josek/AP hide caption

itoggle caption Petr David Josek/AP

Russian President Vladimir Putin waves as he leaves a Ukrainian crisis peace summit in Minsk, Belarus. After hours of talks, Russia and Ukraine reached a deal for a cease-fire in eastern Ukraine. Tatyana Zenkovich/EPA/Landov hide caption

itoggle caption Tatyana Zenkovich/EPA/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

Ukrainian President Petro Poroshenko, left, German Chancellor Angela Merkel and U.S. Vice President Joe Biden, background right, arrive for a meeting in Munich, Germany on Saturday. Matthias Schrader/AP hide caption

itoggle caption Matthias Schrader/AP

People wait on a bus to leave the town of Debaltseve, Ukraine, on Friday to escape the heavy fighting. Nearly 1 million Ukrainians have been displaced by battles between pro-Russian insurgents and government troops. Petr David Josek/AP hide caption

itoggle caption Petr David Josek/AP

Bill Browder crosses Red Square in 2004, at the height of Hermitage Capital Management's success. James Hill/Courtesy of the Browder Family Archives hide caption

itoggle caption James Hill/Courtesy of the Browder Family Archives

Secretary of State John Kerry shakes hands with Ukrainian President Petro Poroshenko in Kiev Thursday. The U.S. and its NATO allies are discussing how to help Ukraine maintain its borders against a separatist movement. Jim Watson/AFP/Getty Images hide caption

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