CAIRO, Sept. 12 (Xinhua) -- Countries in the Middle East condemned on Thursday an Israeli airstrike on a school operated by the United Nations Relief and Works Agency for Palestine Refugees in the Near East (UNRWA) in Gaza's al-Nuseirat refugee camp, which occurred on Wednesday and resulted in 18 fatalities.

The Israel Defense Forces (IDF) asserted that the target was a Hamas command and control center concealed