SANA'A, YEMEN - JUNE 12: In the historical old city of Sana'a civilians, local response teams and Houthi fighters clear the rubble of four houses that were destroyed by what witnesses described as a missile or bomb from a Saudi Arabian warplane overheard. The precise cause of the blast was unknown. Six people were killed and an unreported number are still missing. In this picutre a Houti fighter shows what the neighborhood looked like before the war started. June 12, 2015. (Photo by Sebastiano Tomada/Getty Images Reportage Reportage)