三方会谈变两方，特朗普：普京无需同意和泽连斯基会面

Group 1 - The core viewpoint of the articles revolves around the evolving dynamics of U.S.-Russia relations, particularly regarding potential meetings between the leaders of the U.S., Russia, and Ukraine [1][2][3] - Trump indicated that a meeting between him and Putin could occur without the necessity of a meeting with Zelensky, shifting the focus to a U.S.-Russia dialogue [1] - Putin expressed a willingness to meet with Trump and acknowledged the need for certain conditions to be met before a meeting with Zelensky could take place [2] Group 2 - Trump set August 8 as a "deadline" for a peace agreement between Russia and Ukraine, warning of new sanctions against Russia if no progress is made [2][3] - The U.S. has already imposed sanctions on 213 vessels related to Russia's oil transport, indicating a strong stance against Russia's circumvention of sanctions [3] - The U.S. is considering additional sanctions against third-party countries purchasing Russian oil, particularly targeting India with a 25% tariff on goods due to its continued oil purchases from Russia [3]