WASHINGTON The Council on American-Islamic Relations (CAIR) Tuesday urged President Barack Obama to condemn what the Muslim civil rights group called an Israeli massacre of civilians on a flotilla of ships carrying aid to the blockaded Gaza. Israeli commandos killed at least 10 civilians in a pre-dawn assault on the flotilla. A number of Americans, including former Ambassador Edward Peck, are among those taking part in the humanitarian aid effort. Other passengers include 1976 Nobel Peace Prize winner Mairead Corrigan Maguire of Northern Ireland. The nationalities of the dead are not yet known. It is imperative that President Obama not only speak out strongly against this massacre of civilians but also demonstrate our nations outrage at Israels brutal actions by taking concrete steps to end the humanitarian siege imposed on Gaza with Americas support, CAIR National Executive Director Nihad Awad said in a statement. Our nation must now work to end the inhumane and illegal siege on Gaza. Awad also urged the President to live up to his statement one year ago in Cairo in which he said that America would not turn its back on the legitimate Palestinian aspiration for dignity, opportunity and a state of their own.