Dovid Karpov has been the rabbi at the Darkei Shalom synagogue since it was built 15 years ago. Like many people in his congregation, Karpov grew up in a Soviet-era family that was not religious. He says he had to learn his faith for himself. Sergei Sotnikov/NPR hide caption

itoggle caption Sergei Sotnikov/NPR

Russia is suffering from an exodus of educated, talented citizens, including scientists. Here, scientists rally in Moscow to demand the government increase funding for science last October. Kirill Kudryavtsev/AFP/Getty Images hide caption

itoggle caption Kirill Kudryavtsev/AFP/Getty Images

Members of historical clubs, dressed as Russian cavalry, advance during the 2010 re-enactment of the 1812 battle between Napoleon's army and Russian troops in Borodino. AFP/Getty Images hide caption

itoggle caption AFP/Getty Images

Police examine the site of a car bomb in the Russian city of Kazan on July 19. Ildus Faizov, the mufti of Tatarstan and the top Islamic leader in the region, was wounded in the explosion, while his deputy, Valiulla Yakupov, was shot dead in a separate incident on the same day. Roman Kruchinin/AFP/Getty Images hide caption

itoggle caption Roman Kruchinin/AFP/Getty Images

Gumar Ganiyev opens the gates of the compound where members of the Islamic sect he belongs to have lived in seclusion since the early 2000s outside Kazan, capital of the Russian province of Tatarstan, earlier this month. Nikolay Alexandrov/AP hide caption

itoggle caption Nikolay Alexandrov/AP

Russian protest leader Alexei Navalny speaks to the media as he arrives for questioning at the headquarters of the Russian Investigation committee in Moscow on Monday. Misha Japaridze/AP hide caption

itoggle caption Misha Japaridze/AP

Members of the feminist punk band Pussy Riot, Nadezha Tolokonnikova (left), Yekaterina Samutsevich (center) and Maria Alyokhina, at a hearing in Moscow court on Monday. Andrey Smirnov/Getty Images hide caption

itoggle caption Andrey Smirnov/Getty Images

European countries have agreed to stop importing Iranian oil as of Sunday. This could make it harder for Iran to find markets for its crude. Iran has been filling up tankers off its coast, but analysts say it could run out of storage capacity. This photo shows oil tankers off Iran's coast in January. Kamran Jebreili/AP hide caption

itoggle caption Kamran Jebreili/AP

Women in a Russian punk rock group briefly perform a protest song at Moscow's main cathedral, Christ the Savior, in February. The singers criticized the church and Vladimir Putin, who is now president. Three women have been arrested and jailed for months, and the church is demanding harsh punishment. Sergey Ponomarev/AP hide caption

itoggle caption Sergey Ponomarev/AP

A Syrian rebel fires his weapon during clashes with Syrian troops near Idlib, in northern Syria, on June 15. The conflict has gone on for well over a year, but the international community has shown no appetite for a military intervention. Anonymous/AP hide caption

itoggle caption Anonymous/AP

Slow economic growth in the U.S. is having an impact on many countries around the world. Here, people walk past a board flashing the Nikkei index on the Tokyo Stock Exchange in Japan last month. Toru Yamanaka/AFP/Getty Images hide caption

itoggle caption Toru Yamanaka/AFP/Getty Images

Greece depends heavily on tourism, but the economic crisis is driving away visitors like these ones photographing the Acropolis in Athens from the top of a tour bus last October. Louisa Gouliamaki/AFP/Getty Images hide caption

itoggle caption Louisa Gouliamaki/AFP/Getty Images

Despite the multiple layers of security at airports, terrorists still often target planes. But terrorism analysts say they are also concerned about soft targets. Here, a Transportation Security Administration agent looks at an identity card at the Portland International Airport earlier this month. Rick Bowmer/AP hide caption

itoggle caption Rick Bowmer/AP