With his nation at war, the president of Ukraine turns to the world once again Wednesday, addressing leaders at the U.N. General Assembly via video link hours after Russia announced a partial mobilization of its military to make more resources available for the conflict.
On the same day that leaders of two of the world's most-watched nations - U.S. President Joe Biden and Iranian President Ebrahim Raisi - step up to have their say, Volodymyr Zelenskyy will become the only leader permitted to speak without showing up.