美国总统特朗普：伊朗面临诸多困难，伊朗希望进行谈判。他们本应进行谈判。

Core Viewpoint - The article highlights that Iran is facing numerous difficulties and expresses a desire to engage in negotiations, indicating a potential shift in diplomatic relations [1] Group 1 - Iran is currently experiencing significant challenges [1] - There is an indication that Iran wishes to negotiate [1] - The statement suggests that negotiations should have already taken place [1]