特朗普联大演讲：批评联合国，警告俄罗斯

Group 1 - The core viewpoint of the article is President Trump's criticism of the United Nations and his warning to Russia regarding severe tariffs if the conflict continues [1][2] - Trump questioned the effectiveness of the United Nations, stating that it seems to only produce strong-worded letters without follow-up actions [1] - He criticized the renovation project of the UN headquarters, claiming it cost between $20 billion to $40 billion, while he had proposed a $500 million plan that was rejected [1] Group 2 - Trump warned that if Russia does not end its military actions, the U.S. will impose very severe tariffs, and European countries must also implement similar measures [2] - On the Gaza issue, he urged immediate action to release all hostages and warned that unilateral recognition of Palestine would reward Hamas's violence [2] - He criticized the UN for spending $372 million in 2024 to support 624,000 immigrants entering the U.S., arguing that the UN should prevent invasions rather than encourage them [2]