Plumes of smoke rise over Gaza, as Israel's offensive continues into its seventh day.<br /> <br />Hamas said its armed wing had sent several drones deep inside Israel.<br /> <br />And Israel says they have shot one down.<br /> <br />Gaza health officials say more than 166 Palestinians have been killed in the week-long violence.<br /> <br />This footage, released by Israel's military, is said to show aerial strikes aborted in Gaza to prevent more civilian casualties.<br /> <br />Thousands are seeking refuge, and the United Nations Relief and Works Agency is calling for their premises in the Gaza strip to remain safe.<br /> <br />(SOUNDBITE) (English) COMMISSIONER GENERAL OF UNRWA, PIERRE KRAHENBUHL, SAYING:<br /> <br />"We know that when people seek refuge in a place, they think these premises are safe. UNRWA premises and other UN premises must be respected and spared from the effects of the fighting that's a very important message. So, we speaking about it, as a reminder of what happened in 2008-9, and as a call for it not to
