By Nidal al-Mughrabi and Steven Scheer CAIRO/JERUSALEM, Aug 2 (Reuters) - Israeli airstrikes hit Gaza for a second straight day on Sunday, killing at least 13 Palestinians, medics said, despite U.S. President Donald Trump's announcement of a breakthrough in efforts to implement last year's Gaza ceasefire agreement. From dawn, Israeli warplanes hit Gaza City in the north, the central city of Deir al-Balah and the southern area of Khan Younis, causing the biggest daily death toll in weeks, according to Palestinian health officials.
