In this photo released by the Israeli Defence Forces (IDF), Israeli soldiers walk towards the northern Gaza Strip January 12, 2009. An Israeli military spokesman said army reservists had been thrown into the campaign that Israel launched with the declared aim of ending cross-border rocket attacks from the Hamas-ruled territory to its south. REUTERS/Neil Cohen/IDF/Handout (ISRAEL). FOR EDITORIAL USE ONLY. NOT FOR SALE FOR MARKETING OR ADVERTISING CAMPAIGNS.