Re: Ukraine
Has apparently been able to knock out some of Russia's hypersonic missiles with the US Patriot antimissile system and the Israeli equivalent. They weren't designed for that, and it doesn't work every time, but it is impressive it works at all.
They claim to have, but haven't really produced much in the way of convincing evidence, ie video and photos of something they call a Kinzhal, but almost certainly isnt. But in theory, they were designed for that, ie an ICBM on it's descent phase from low orbit is often hypersonic. But then there's a long history of disputed claims around the Patriot dating back to their success rate against Scuds during the Gulf War. Bush claimed '97%', but never trust anyone who's 97% certain without strong evidence to support that.
There were also disputed claims around testing, so the use of specially designed targets that would explode nicely. A big issue with missile defence was realised in the GW. So a SCUD with a chemical (or nuclear) warhead is on it's descent. You may poke a few holes in it, but gravity is still going to win, and the missile is coming down. If the warhead is still viable, it's still going to do damage although if a chemical warhead, that might be localised if it doesn't airburst. But this is also the other problem. Both missile and interceptors are coming down, and may cause damage to civilian buildings, as has happened in Israel, and is happening in both Ukraine and Russia's territory.
On the plus side though, I assume we're collecting a ton of performance data about these missiles, so next-gen systems might perform better. Still a wicked problem to solve given the velocities involved, and the need to kill rather than just wing an incoming missile.