President Donald Trump and Ukrainian President Volodymyr Zelensky on Sunday took steps toward agreeing on a proposal to end Russia's invasion, but difficult sticking points remain to be resolved and it's unclear if Russia would agree to their recommendations. The leaders, who met Sunday at Trump's Mar-a-Lago Club in Palm Beach, Florida, said talks involving the three countries would continue in January. Trump, Zelensky and European leaders all praised Sunday's progress, despite the absence of a clear breakthrough...