U.S. Secretary of State Antony Blinken blamed Hamas on Monday for holding up a ceasefire in Gaza, as the top U.S. diplomat conducted a Middle East peace mission to deliver President Joe Biden's latest proposed plan to end the Gaza war. Speaking after meeting Egyptian President Abdel Fattah al-Sisi in Cairo, Blinken said Hamas was the only side that had yet to agree to Biden's proposal, which Washington says already had Israel's backing before Biden announced it on May 31. Washington says its proposal envisions a ceasefire in stages, ultimately leading to a permanent end to the war. But Israel...