KYIV, Ukraine (AP) — The president of Ukraine is facing a confluence of crises testing his ability to lead an increasingly weary nation nearly four years into a devastating full-scale invasion by Russia. For more than a week, Volodymyr Zelenskyy has struggled to contain the fallout from a $100 million corruption scandal implicating top officials and other associates. The pressure on Zelenskyy has ratcheted up as the United States pushes a proposal it drew up with Russia that would require major