How does this compare to Russia's Avangard? https://en.wikipedia.org/wiki/Avangard_(hypersonic_glide_vehicle) https://en.wikipedia.org/wiki/Avangard_(hypersonic

How does this compare to Russia's Avangard? https://en.wikipedia.org/wiki/Avangard_(hypersonic_glide_vehicle) https://en.wikipedia.org/wiki/Avangard_(hypersonic_glide_veh... I recall trying to read up on the topic of hypersonic missiles about a year ago but relevant information is very scarce.