That quote you presented states that many of the arms held by the Houthis were not supplied by Iran. True or not, this assertion does not support the subsequent

That quote you presented states that many of the arms held by the Houthis were not supplied by Iran. True or not, this assertion does not support the subsequent that "the Houthis acting very much on their own agenda, rather than as an Iranian proxy". Even if the Houthis obtain armament from other sources, they may absolutely be following Iranian agenda. Indeed it seems hardly coincidental that their campaign against KSA has been escalating in lockstep with Iran's campaign of violently lashing out against the sanctions imposed upon it. Moreover, there's very clear evidence that Iran (through IRGC) is supplying the Houthis with their most sophisticated weapons, such as Kornet missiles and indeed drones like those used in this attack: > The Houthis have repeatedly used a drone that is nearly identical to Iran Aircraft Manufacturing Industrial Company's Ababil-T drone in strikes against Saudi Arabia. https://en.wikipedia.org/wiki/Houthi_movement#IRGC_involvement https://en.wikipedia.org/wiki/Houthi_movement#IRGC_involveme... So whether it has other sources to acquire arms seems quite irrelevant. The fact is, the Houthis are using sophisticated Iranian weapons in attacks that are perfectly aligned with Iranian interests (and completely unaligned with identifiable Yemenite interests). Be careful of uncritically accepting assertions that Iran isn't responsible for the actions of its various proxies. Iran has a strong interest in denying this responsibility, and indeed this denial is the core reason Iran has a proxy strategy to begin with.