Israel of course!

"Qana is known internationally for two separate incidents in which the Israeli Defense Forces is charged with causing civilian deaths during military operations in Lebanon: 1996 shelling of Qana: On 18 April 1996, amid heavy fighting between the Israel Defense Forces and Hezbollah fighters during Operation Grapes of Wrath, a Fijian UNIFIL compound in the village was shelled by Israeli artillery, killing 106 civilians and injuring around 116 others who had taken refuge there to escape the fighting. Four UNIFIL soldiers were also seriously injured. Graves of the 28 people killed by the airstrikes on Qana2006 Qana airstrike: On 30 July 2006, during the 2006 Israel-Lebanon conflict, Israeli airstrikes hit an apartment building. The Lebanese Red Cross originally stated that at least 56 people were killed, 32 of which were children. Human Rights Watch later announced that at least 22 people escaped the basement, and 28 are confirmed dead, of which 16 were children, with 13 more still missing Women were dressed in black and wept over the graves on October 23, 2006, which marks the Eid ul-Fitr-holiday." Source and further information: http://en.wikipedia.org/wiki/Qana