特朗普对俄罗斯“变脸”！发生了什么？

Core Viewpoint - The article discusses President Trump's recent announcement regarding Russia, stating that if a peace agreement with Ukraine is not reached within 50 days, the U.S. will impose severe tariffs on Russia, alongside military aid to Ukraine through NATO [1][9]. Summary by Sections U.S.-Russia Relations - Trump has expressed dissatisfaction with Russia, indicating that previous discussions with President Putin were unproductive, despite a cordial atmosphere during their six phone calls this year [3][5]. - The U.S.-Russia trade has significantly decreased from $35 billion in 2021 to $3.5 billion in 2024, a drop of 90% [8]. Military Aid to Ukraine - Trump plans to provide advanced military weapons to Ukraine, including the "Patriot" missile defense system, which marks a shift from his previous stance of only supplying defensive weapons [9]. - NATO member countries, including Germany and Canada, are also interested in contributing to the military aid for Ukraine [10]. Negotiation Dynamics - The article highlights the complexity of the ongoing negotiations, with Trump’s previous optimistic timelines for resolving the conflict now shifting to a more pessimistic view [11]. - The lack of urgency from Ukraine to initiate further negotiations indicates the challenges in reaching a consensus [12].