The so-called barefoot are not afraid to wear shoes, so how did the Houthis, known as the "slipper army", develop into an armed force that dares to compete with the US military, and what is its strength? 
Since October 2023, the Houthis have announced a high-profile blockade of the Red Sea shipping lanes, and in the following months, they have used multiple types of ** to strike at the US aircraft carrier group and various merchant ships, and the Houthis have been attacking ships from the beginning to January 12, 2024, nearly 2 months after the United States and Britain launched their first strike. 
It was not until January 11, after the Houthis fired another missile into the Gulf of Aden shipping lane, that the US-British coalition began to launch punitive strikes against the Houthis. The Houthis have anti-American sentiment because they believe that U.S. policies in favor of Yemen** and Saudi Arabia will further exacerbate the suffering of the Yemeni people. So their attitude towards the United States has always been tough, and at the annual Houthi military parade, there is even a show of stepping on the American and Israeli flags. Let's not judge the Houthi approach first, what is so powerful about this Houthi rebel that has gone from being passively beaten to becoming stronger and stronger, so that the United States can endure it again and again? 
The Houthis blockade of the Red Sea mainly have three main means: first, anti-ship missiles, and the "Armand" anti-ship missiles and "Quds Al-Sharif" cruise missiles are more prominent. 
"Armand" anti-ship missile is a general term for a series of anti-ship missiles, in the captured Houthi anti-ship missile, this missile is printed with the words "C802", so the outside world speculates that the Houthis are on this basis to assemble the "Armand" anti-ship missile, C802 is the export version of China's Eagle Strike 82, C802 is favored by foreign countries because of its long range, high accuracy and strong strike ability, C802 has a range of about 120 kilometers, The subsequent improved model, the C-802A, has a range of more than 180 kilometers, and it can be launched from ships, aircraft, submarines and even land-based launch platforms, making it an extremely flexible system.
Using active radar guidance and a sea surface search mode when approaching a target to improve hit accuracy, the C802 is equipped with a high-** charge or armor-piercing warhead weighing about 165 kg, which is enough to wreak havoc on medium to large ships. The C802 has a flight speed of about 0Mach 9, which belongs to the subsonic category. Although not as fast as some supersonic anti-ship missiles, its ability to fly close to the sea compensates for the lack of speed to some extent. After the C802 was exported abroad, it was also copied by Iran as the "Noor" anti-ship missile.
In addition to anti-ship missiles, the Houthis' three-plank axes also have a large number of drones and simple modifications**, especially these cheap drones are a headache for the United States, although the missiles carried by the drones are less powerful, but it can use higher strike accuracy to improve the killing effect. The Houthis use a large number of drones to fight, but also exposed the shortcomings of the US military in long-range combat ammunition, the number of UAVs produced far exceeds missiles, if the use of short-range anti-aircraft missiles or close-in defense artillery to defend, and the threat will be too close, bringing risks to high-value ships, so the US military can only use long-range air defense systems for combat.
In this case, the U.S. military can only bite the bullet and use $4 million worth of missiles to intercept $2,000 drones. Although the Houthis have repeatedly failed in their attacks on the US military, they have not suffered losses, and some self-made ** such as sea ** devices and mines have not posed a substantial threat to US ships, but such an undisciplined way of fighting has also made the US military scratch their heads and dare not act. And in this conflict, foreign media reported that the British Navy was slightly damaged, and 2 Type 23 frigates were evacuated from the Red Sea. It is conceivable that the Houthis' three-plate axe still has a certain effect. The coalition forces are withdrawn, how will the US military respond next?