特朗普向普京发出最后通牒：2周内必须停火！

Group 1 - The core viewpoint is that President Trump is shortening the deadline for a ceasefire agreement with Russia from 50 days to approximately 10 to 12 days, expressing disappointment in President Putin's willingness to negotiate [1] - Trump previously threatened to impose a 100% tariff on Russian oil and other exports if hostilities with Ukraine do not cease, indicating a significant shift in his tone towards Russia [1] - The U.S. and allied capitals view oil purchases from Russia as tacit support, which undermines the effectiveness of sanctions [1] Group 2 - Since Trump's renewed threats of sanctions, Russia has intensified missile and drone attacks on Ukrainian cities, with Trump showing increasing impatience towards Putin [2] - NATO allies, particularly Germany, are negotiating to provide Ukraine with more "Patriot" air defense systems in response to the ongoing attacks [2] - A legislative proposal in Congress aims to impose a 500% tariff on countries purchasing Russian oil and gas, reflecting a broader push for economic pressure on Russia [2]