Smoke is seen during an Israeli military operation in Gaza City, on Jan. 15, 2009. At least 30 Palestinians in the Gaza Strip were killed on Thursday until morning hours, as Israeli ground forces pushed deeper into densely populated areas of Gaza City, medical sources and witnesses said. The overall Palestinian death toll in the massive Israeli military offensive "cast lead" has reached about 1,060, according to the sources. [Wissam Nassar/Xinhua]