Wonderful
Doesn't it give one a warm happy glow; how the human race has progressed from chucking rocks at each other to this (and it's US/Chinese/French/British/Israeli/Pakistani and Indian brothers)?
Now we can presumably spend our own money to a) build better anti-hypersonic-missile-missiles, and b) build our own anti-hypersonic-missile-missile-proof-missile.
But I guess as we have sorted out cancer, poverty, global warming and conventional war, there's nothing better to do.