Writing at RUSI.org, former Biden administration Russia/ analyst Eric Ciaramella argues that Ukraine should give up aspirations to an “Article-5 style” security guarantee in negotiations to end the war.

He writes:

The notion that the US and European nations would obligate themselves to defend Ukraine from a future Russian attack — the essence of — strains credulity. A pledge by Trump to do so would be especially implausible considering how his administration has cut American support for Ukraine and is intent on reducing the US role in Europe’s security.
But even European leaders or a future US president who is more supportive of Kyiv would be challenged to make an “Article 5-style” commitment appear credible, at least not without a proven willingness to become more directly involved in Ukraine’s defence.

Well, obviously. But, if it is obvious that the USA and European nations cannot or will not directly defend Ukraine, why did the Biden administration maintain the itself before 2022? This is now precisely the top item on the Russian agenda to clarify in negotiations.