The Saudi-led alliance backing Yemen's internationally recognized government has vowed an "unprecedented" response to any hostile actions towards the kingdom or violations of Yemen's sovereignty, following recent threats from the Houthi movement. This decision comes in response to the Houthis allegedly permitting an Iranian civilian aircraft to land in their controlled capital, Sanaa, for the first time in a decade. The Iran-aligned group is accused of seeking to evade accountability for its actions against Yemen's people and exporting economic hardships caused by them. On Friday, Houthi military spokesperson Yahya Saree threatened a "comprehensive" response targeting Saudi airports and critical land and sea interests. The Iranian aircraft, carrying over 200 patients and a Houthi delegation to Tehran for the funeral of Iran's late supreme leader, was reportedly blocked by Houthi forces from being intercepted by Saudi warplanes. This incident has raised concerns about potential targeting of Yemeni civilian infrastructure, including ports and airports, power stations, and industrial facilities. The coalition's statement warns of a robust response to any attempts to threaten the kingdom, its citizens, or assets, or violate Yemen's sovereignty. The coalition has also reiterated previous allegations that the Houthis have disrupted shipping lanes and international trade in the southern Red Sea and Bab al-Mandeb Strait. In response, Yemen's Presidential Leadership Council, internationally recognized, has condemned the Iranian flight as a breach of Yemeni sovereignty and called on the UN and regional partners to take action against further escalation by Iran. The conflict, which started in 2015 when the Houthis seized Sanaa and ousted the internationally backed government, has resulted in widespread displacement and damage, making it one of the world's most severe humanitarian crises.