美被爆向泽连斯基下“最后通牒”：接受美方安全保障方案，否则面临失去保障风险

Group 1 - The core viewpoint of the article highlights the ongoing discussions between the US and Ukraine regarding a security assurance plan, with the US urging Ukraine to accept the proposal to avoid losing these guarantees entirely [1][3] - The US has proposed a "NATO-style" security assurance plan, described as "platinum-level," but the details remain undisclosed. This proposal is seen as a strong and clear commitment from the Trump administration to Ukraine, with an implicit ultimatum for immediate acceptance [3] - European sources indicate that while there is a positive attitude towards the security assurance terms, the US insists on Ukraine withdrawing troops from the eastern Donbas region as a condition for peace, which Ukraine has repeatedly rejected [3][4] Group 2 - Ukrainian President Zelensky stated that joining NATO is the true guarantee for Ukraine, but due to opposition from the US and some European partners, Ukraine is willing to accept security assurances similar to NATO's Article 5 collective defense clause [4] - The collective defense clause of the North Atlantic Treaty states that an armed attack against one or more contracting parties is considered an attack against all [4] - Russia has consistently expressed opposition to Ukraine's NATO membership [4]