Israel destroyed a score of buildings in Gaza City, killing at least 16 Palestinians, local health authorities said on Monday, while US Secretary of State Marco Rubio discussed the war with Israeli Prime Minister Benjamin Netanyahu in Jerusalem. Rubio's visit coincided with an emergency summit in Qatar of Arab and Islamic states, some of them close US allies, convened in response to Israel's attack last week on leaders of Hamas who reside in the Gulf state. While diplomacy unfolded in Jerusalem and Doha, the Palestinian death toll kept mounting with two air strikes on sites in Gaza City, one on two family homes and another on a tent housing a displaced family. Witnesses said strikes from the air and the...