The U.S. warplanes on Saturday night launched airstrikes on several Houthi sites in Yemen's capital Sanna and the northern province of Saada, Houthi-run al-Masirah TV reported. At least 31 people were killed and over 100 others wounded in the airstrikes, most of them children and women, said the Houthi-run Health Ministry. The Houthi TV reported four airstrikes in the Al-Jarraf residential neighborhood in northern Sanaa. Later in the evening, fresh strikes hit sites in the northern part of the province's namesake central city Saada, the group's northern main stronghold. No further details were provided by the TV channel. According to local residents, the strikes in Sanna targeted ammunition and rocket depots near the Houthi-controlled state television station in the Al-Jarraf neighborhood. White smoke plume could be seen rising from the neighborhood, and a series of explosions were triggered following the airstrikes, witnesses added. Osama Sari, a Houthi official, wrote on X that the strikes on Al-Jarraf neighborhood also damaged parts of the Specialized Modern University near the Airport Road. This is the first military operation conducted by the U.S. military against the Houthi sites since U.S. President Donald Trump assumed power in January and redefined the group as a "foreign terrorist organization." Trump said in a post on the social media Truth Social that the aerial attacks on the "terrorists' bases, leaders, and missile defenses were to protect American shipping, air, and naval assets, and to restore navigational freedom." He also warned Houthis that if they do not stop their attacks "starting today... Hell will rain down upon you like nothing you have ever seen before." In the meantime, the U.S. Central Command posted footage on X showing warplanes taking off a U.S. aircraft carrier in the Red Sea, saying that it "initiated a series of operations consisting of precision strikes against Iran-backed Houthi targets across Yemen to defend American interests, deter enemies, and restore freedom of navigation." Following the U.S. airstrikes, the Houthis vowed to launch retaliatory attacks, saying "this aggression will not pass without a response," and that the group is "fully prepared to confront escalation with escalation," the Houthis' political bureau said in a statement aired by al-Masirah TV. On Tuesday, the Houthi group announced that it would resume launching attacks against any Israeli ship in the Red Sea, Arabian Sea, the Gulf of Aden, and the Bab al-Mandab Strait until the crossings of Gaza Strip are reopened and aid allowed in. From November 2023 to Jan 19, 2025, the Houthi group, which currently controls much of northern Yemen including the capital Sanaa, had launched dozens of drone and rocket attacks against Israel-linked ships and Israeli cities to show solidarity with Palestinians amid the ongoing Israel-Hamas conflict. The Houthis stopped their attacks on Jan 19, when the Gaza ceasefire deal took effect. Shotlist: Sanaa, Yemen - March 15, 2025: 1. Street scene at night; FILE: Sanaa, Yemen - July 9, 2022 2. Various of cityscape, Yemeni national flag; FILE: Sanaa, Yemen - Jan 16, 2025 3. Various of traffic. [Restriction - No access Chinese mainland]