整理：中东局势跟踪（6月21日）

Group 1: Iran-Israel Conflict - The International Atomic Energy Agency reported damage to key structures at Iran's heavy water production plant [1] - Israel plans to strike the Fordow nuclear facility within days, regardless of U.S. involvement [1] - Iran claims to have thwarted an assassination attempt on its foreign minister by Israel [1] - Israel states that Iran has used cluster missiles for the first time in the conflict and continues to target Iranian nuclear facilities [1] Group 2: Negotiation Status - U.S. President Trump indicated potential support for a ceasefire between Israel and Iran, but noted the difficulty in getting Israel to halt its actions [2] - Iran's foreign minister expressed willingness to resume negotiations if Israel stops its aggression, emphasizing the importance of discussions with the EU [2] - The Kremlin stated that a regime change in Iran is "unacceptable" [2] - Germany is open to further negotiations with Iran if it agrees to limit its uranium enrichment activities [2] Group 3: Other Developments - The Swiss Foreign Ministry temporarily closed its embassy in Iran [3] - Iran has restricted internet access for national security reasons [3] - U.S. intelligence officials warned that an attack on the Fordow facility or an assassination of Khamenei could lead Iran to pursue nuclear weapons development [3] - Russia's President Putin expressed concern about the potential for a third world war [3] - The Israeli Defense Forces reported over 300 attacks in Gaza in the past week, targeting various militant sites [3]