U.S. President Joe Biden's appearance to start the four-day Democratic National Convention will serve as a symbolic passing of the torch to Vice President Kamala Harris, He quit the race under pressure from top Democrats worried that the 81-year-old incumbent was too old to win or serve another four years. Secretary of State Antony Blinken on Monday urged Hamas to accept a U.S. bridging proposal for a Gaza ceasefire. And couples from all over the world graced the stage in Buenos Aires during the World Tango Championship on Monday.