GAZA CITY, Palestine  At least 11 Palestinians were killed and others injured in Israeli airstrikes across the Gaza Strip on Sunday, in a fresh violation of the Oct. 10 ceasefire agreement, the Civil Defense said. The organizations said that the fatalities occurred in the continued Israeli bombardment of various areas in the enclave since dawn. A medical source said five people were killed and others wounded in an airstrike targeting a group of civilians southwest of Khan Younis in southern