白宫威胁俄罗斯，普京表态；特朗普称预计“特普会”失败风险为“25%”

Group 1 - The core focus of the upcoming US-Russia summit is to address the Ukraine crisis, with both leaders expressing a willingness to engage in diplomatic discussions [1][2][6] - US President Trump indicated that he believes there is a 25% risk of failure in reaching an agreement with President Putin during their meeting [3][4] - Trump emphasized that if the meeting does not yield immediate results, sanctions will be implemented, and the discussions will involve mutual concessions regarding borders and land issues [3][4] Group 2 - White House Press Secretary Levitt stated that the US has sufficient tools to help end the Ukraine conflict but prefers diplomatic negotiations over sanctions [1][6] - Russian President Putin acknowledged the US's sincere efforts to resolve the Ukraine crisis and create conditions for long-term peace in Europe [1][6] - The meeting is scheduled to take place in Anchorage, Alaska, where both leaders will also hold a joint press conference [2][7]