headed to riyadh, vab's capital. the saudi government calls it an act of war by iran. the saudi say rebels in yemen fired it, they intercepted it and claim its the work of iran. the u.s. military says it has iranian markings. . it's been demonstrated, there are pictures that depict that. to me that connect the dots to iran in terms of who's supplying those missiles and that capability. >> secretary of state rex tillerson travelling in asia says the missile appears to have iranian origin and, quote, once we can confirm that with actual forensics i think it will be useful in deciding what action to take next. particularly at the u.n. security council that, would represent a violation of certain security council resolutions in terms of providing arms into a conflict zone. saudi arabia is fighting iran-backed rebels in yemen, part of a broader proxy fight with iran. in leb bonn, saudi arabia claims