Some of the destruction at the scene of Friday's car bombing in Beirut. AFP/Getty Images hide caption

itoggle caption AFP/Getty Images

Hassan al-Laqis, described as one of Hezbollah's founding members, was killed in an attack outside his home in Beirut. He's seen here in a photo released Wednesday by the Hezbollah Media Relation Office. AP hide caption

itoggle caption AP

This car was among many vehicles destroyed by bombs Tuesday in Beirut. Nearby buildings suffered extensive damage. More than 20 people, including an Iran diplomat, were killed by the explosions near Iran's embassy. Nabil Mounzer /EPA/LANDOV hide caption

itoggle caption Nabil Mounzer /EPA/LANDOV

Syrian refugees stand in line for food at Kawergost refugee camp in Irbil, Iraq, on Aug. 21. The Syrian civil war has already sparked a refugee crisis in the region. Now, many countries are waiting to see the effects of a possible U.S. military strike. Hadi Mizban/AP hide caption

itoggle caption Hadi Mizban/AP

A Syrian soldier walks through the hotly contested city of Qusair on May 22. The Syrian army, backed by Lebanon's Hezbollah militia, has been waging a fierce fight with rebels in the key western city for the past two weeks. STR/STR/AFP/Getty Images hide caption

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Um Ahmed, her husband, Abu Ahmed, and their two children sit inside a United Nations refugee registration center in Tripoli, Lebanon. They fled the northern Syrian city of Aleppo a month ago. "There was a lot of shelling," said Um Ahmed. "I wasn't thinking. I was just thinking of my children." Nicole Beemsterboer/NPR hide caption

itoggle caption Nicole Beemsterboer/NPR

Lebanese firefighters extinguish burning cars in Beirut following a huge bomb explosion. Hussein Malla/AP hide caption

itoggle caption Hussein Malla/AP