President Joe Biden on Tuesday will condemn Hamas and stress U.S. support for Israel as it reels from the killing of more than 1,000 people, including at least 11 Americans, from a surprise attack launched by the Palestinian militant group. Biden is set to speak at 1 p.m. ET (1700 GMT) from the White House. He will express concern about the potential that some Americans are being held hostage by Hamas, an Iranian-backed Islamist group, a senior White House official said. Israel pounded the Gaza Strip on Tuesday with the fiercest air strikes in its 75-year-old conflict with the Palestinians,...