Comment:  Asia Times article provides a comprehensive review of Sentinel from various news sources and includes a link to the SIPRI Yearbook 2024 Chapter 7, World Nuclear Forces as of the end of 2023. 
(STOCKHOLM INTERNATIONAL PEACE RESEARCH INSTITUTE)
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Asia Times Article July 9, 2024

https://asiatimes.com/2024/07/us-sentinel-missile-woes-raise-nuclear-readiness-concerns/

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World Nuclear Forces Chapter 7

https://www.sipri.org/sites/default/files/YB24%2007%20WNF.pdf

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Press Release SIPRI Yearbook 2024

https://www.sipri.org/media/press-release/2024/role-nuclear-weapons-grows-geopolitical-relations-deteriorate-new-sipri-yearbook-out-now