a possible arms race that could lead to a nuclear war
Yeah. For the clarity to other readers, this statement is not supported by any logic nor by any argument. It is just that "some analysts" (i.e. probably some dude the author met in a pub) say that something could lead to "nuclear escalation". It is there to attract eye balls and clicks. Now that we have agreed that the whole talk about "nuclear war" or "nuclear escalation", we can focus on discussing this pretty cool sounding hypersonic weaponry stuff.