The Kremlin said Friday that it's open to talking about a possible prisoner exchange involving American basketball star Brittney Griner but strongly warned Washington against publicizing the issue....Lavrov said Moscow was "ready to discuss" a prisoner swap but that the topic should only be discussed via a dedicated Russia-U.S. channel that President Joe Biden and Russian President Vladimir Putin agreed to establish when they met in Geneva in June 2021."If the Americans again try to engage in public diplomacy and make loud statements about their intention to take certain steps, it's their business, I would even say their problem," Lavrov...