Salvage workers gather at the scene of a United Nations plane crash in Democratic Republic of Congo's capital Kinshasa April 4, 2011. Thirty-two people were killed and one survived when a UN plane crashed while trying to land at the airport serving Kinshasa on Monday, a UN spokesman said. [Photo/Agencies]

An Israeli soldier walks next to a launcher, part of the Iron Dome rocket shield system, near the southern city of Ashkelon April 4, 2011. Israel deployed a second rocket shield unit near Ashkelon on Monday, but has cautioned Israelis under fire from the Hamas-run territory that they would not be completely protected. [Photo/Agencies]