A new round of face-to-face talks between Russia and Ukraine is being held in Turkey's largest city Istanbul on Tuesday. Delegations of both countries have arrived in the city. Turkish President Recep Tayyip Erdogan is expected to address the delegations at the opening of the meeting. Turkey has been exerting significant efforts to resolve the crisis through agreement and dialogue, Erdogan said. In the new round of Russia-Ukraine talks, what substantial progress will be achieved? Follow CGTN's reporter to learn more.