Riyadh airport hit for second straight day; US weighs military role against Houthis

The shift here is not the strike itself but the widening of the conflict's participants: a US citizen among the dead and an explicit US deliberation over joining military action turn a Saudi-Houthi exchange into a potential multi-party confrontation. That raises the stakes for Gulf aviation and cross-border infrastructure, which have so far been treated as peripheral to the Yemen file. Whether Washington moves from weighing to acting is the open question, and it is the variable most likely to reshape regional risk pricing.