新闻分析｜看特朗普“变脸”，俄罗斯为何“很淡定”

Group 1 - The core viewpoint of the articles highlights the shift in U.S. President Trump's stance towards Russia and Ukraine, indicating a commitment to support NATO and Ukraine with military aid, which NATO will fully fund [1][2] - Trump's dissatisfaction with Russia's lack of progress in resolving the Ukraine issue is evident, as he expressed disappointment after a call with President Putin [1] - Russia's response to Trump's changing attitude is characterized by calmness, with officials suggesting that they are accustomed to Trump's unpredictable behavior and view his threats as posturing for domestic audiences [2][3] Group 2 - The ongoing dialogue between Russia and the U.S. continues despite Trump's changing rhetoric, with recent talks between Russian Foreign Minister Lavrov and U.S. Secretary of State Rubio indicating a mutual desire for dialogue and cooperation [2] - Russia's strategic objectives regarding Ukraine remain unchanged, focusing on preventing Ukraine from becoming a security threat and seeking a comprehensive resolution to the crisis rather than temporary ceasefires [2][3] - The Russian government maintains a strategic awareness of U.S. policies, recognizing that the U.S. has not abandoned its containment strategy against Russia, as highlighted in the 2023 Foreign Policy Concept of the Russian Federation [3]