Russian President Vladimir Putin and US counterpart Donald Trump on Tuesday discussed the Ukraine conflict in an “extremely frank” and constructive hour-long phone call, the Kremlin said.It came after US negotiators Steve Witkoff and Jared Kushner visited Moscow and Kyiv over the weekend in an attempt to kick-start long-stalled US efforts to end the fighting.Washington has been pushing for fresh face-to-face talks between Moscow and Kyiv.Kyiv says the talks could happen as early as this...