breaking news this hour. as a second night of strikes are happening in yemen as we are learning the u.s. has carried out more strikes against houthi targets there, specifically a radar facility that was used by the iranian-backed militant group. tonight's action carried out solely by the united states. it's different than what we saw happening last night, which was multinational. it's also much smaller in scale than the strikes we saw last night. and it targeted dozens of houthi positions across northern yemen. all of this is going on as something the white house is watching closely. the houthi militants were already vowing retaliation, and today you saw mass protests filling the streets in the capital of yemen as the white house says it wants to avoid further escalation. that this was a message of deescalation and deterrence. >> we will make sure that we respond to the houthis as they