A convoy purportedly carrying humanitarian aid is parked about 17 miles from the Ukrainian border, Rostov-on-Don region, Russia, on Friday. Ukrainian officials have insisted on inspecting the cargo over fears that the convoy might be a pretext for invasion. Pavel Golovkin/AP hide caption

itoggle caption Pavel Golovkin/AP

A Ukrainian soldier cleans his armored personnel carrier near Donetsk in eastern Ukraine on Monday. Russia says a large convoy that's heading to the area from Moscow is carrying humanitarian aid. Anatolii Stepanov/AFP/Getty Images hide caption

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A woman removes debris from a cafe that was destroyed during fighting between Ukrainian forces and pro-Russian militants Aug. 5 in the eastern Ukrainian city of Slavyansk, in the region of Donetsk. Anatolii Stepanov/AFP/Getty Images hide caption

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People holding Ukrainian and Crimean Tatar flags demonstrate in front of the French-built Vladivostok warship in St. Nazaire, western France, on June 1. The protesters are opposed to the sale of the Vladivostok and Sevastopol warships to Russia. Jean-Sebastien Evrard/AFP/Getty Images hide caption

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A smoldering rebel APC near the city of Lisichansk, Luhansk region, eastern Ukraine, on Saturday. Fighting farther south, near the city of Donetsk, has prevented investigators from reaching the wreckage of MH17. Dmitry Lovetsky/AP hide caption

itoggle caption Dmitry Lovetsky/AP

Ukrainian troops camouflage their multiple rocket launcher at a checkpoint in Kryva Luka, in eastern Ukraine, earlier this month. The U.S. says Russia is planning to provide similar systems to the rebels. Evgeniy Maloletka/AP hide caption

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Pro-Russian rebels move journalists away from Malaysian investigators and monitors from the Organization for Security and Cooperation in Europe Tuesday. Malaysia Airlines flight MH17 was allegedly shot down by a missile Thursday; today, U.S. intelligence says it has verified that two rebel leaders spoke by phone about shooting the plane down. Rob Stothard/Getty Images hide caption

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Marina Litvinenko, the widow of former Russian intelligence officer Alexander Litvinenko, says she is "relieved and delighted" with the U.K. government's decision to open a public inquiry into the former KGB agent's death in 2006 by radiation poisoning. Matt Dunham/AP hide caption

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A pro-Russian rebel talks on a phone as a refrigerated train loaded with the bodies of victims from Flight MH17 leaves the station in Torez, eastern Ukraine, about 9 miles from the crash site of the Malaysia Airlines jetliner. Vadim Ghirda/AP hide caption

itoggle caption Vadim Ghirda/AP

A Sukhoi Su-25 single-seat, twin-engine jet aircraft with Russian markings. A similar Ukrainian jet was reportedly shot down late Wednesday. Syritsa Mikhail/ITAR-TASS/Landov hide caption

itoggle caption Syritsa Mikhail/ITAR-TASS/Landov