Dhaka, May 16 -- US Secretary of State Marco Rubio Thursday downplayed expectations for the Russia-Ukraine peace talks in Istanbul, after Moscow sent a low-profile delegation and both sides traded insults ahead of the negotiations. "I want to be frank. we don't have high expectations of what will happen tomorrow," Rubio told reporters after NATO talks in Antalya, Turkey, echoing what his boss Donald Trump said about the negotiations earlier. The US president appeared to concede that progress in Turkey was unlikely, saying there would be no movement towards ending the war until he met his Russian counterpart Vladimir Putin. Ukrainian President Volodymyr Zelensky sent a team to Istanbul for the first direct peace talks with Russia in three ...