Dhaka, April 27 -- Donald Trump and Volodymyr Zelensky met briefly in St Peter's Basilica on the sidelines of Pope Francis's funeral in the Vatican on Saturday in their first encounter since a White House clash as the US president pushes the Ukrainian leader to make a peace deal with Russia.The two agreed to further talks after the funeral, the Ukraine president's office said, after Zelensky's aide described the first meeting as "constructive" and the White House called it "a very productive discussion". The Ukrainian presidency released photos of the two men sitting face to face, leaning forward in deep discussion in a corner of the basilica, before the start of the funeral.Another photo showed the two leaders in a huddle inside the basi...