U.S. Secretary of State Antony Blinken will hold talks in the United Arab Emirates and Saudi Arabia on Monday before heading on to Israel after warning that the Gaza war could spread across the region without concerted peace efforts, while Israel vowed to continue fighting until Hamas was eliminated. Blinken was in Jordan and Qatar on Sunday at the start of a five-day diplomatic effort in the Middle East seeking to avert a wider war in the region. He is also due to visit the West Bank and Egypt this week.