美国总统特朗普：如果俄罗斯与乌克兰没能在50天内达成协议，那就太糟糕了。（乌克兰）不应当针对俄罗斯首都莫斯科。

Group 1 - The core viewpoint is that President Trump emphasizes the urgency for Russia and Ukraine to reach an agreement within 50 days, indicating that failure to do so would be detrimental [1] - Trump suggests that Ukraine should refrain from targeting Moscow, which may imply a strategic approach to the conflict [2]