TOPSHOTS A picture shows a mural of late Palestinian leader Yasser Arafat on a section of Israel's controversial separation barrier in the West Bank's Qalandia refugee camp, near Ramallah, on November 6, 2013. Swiss scientists have concluded Palestinian leader Yasser Arafat is likely to have died from polonium poisoning, according to a text of their findings published by Al-Jazeera television. AFP PHOTO /AHMAD GHARABLI