U.S. Secretary of State Marco Rubio said Tuesday that the United States is working toward a "fair" and "sustainable" solution to end Russia’s three-year war on Ukraine, but that both Moscow and Kyiv would have to make concessions to achieve peace. -snip- Rubio said he was "convinced" that Moscow was willing to engage in a "serious process" to end the war, which Russia started with a full-scale invasion of its neighbor three years ago next week. Lavrov had a similar upbeat view of the talks, saying, “We weren’t just listening to each other, but we heard each other. I have...