So much attention has been given to obviously unqualified Defense Secretary Pete Hegseth's Signal messages, that the media has mostly overlooked what the leaked war plans were about.

On March 15, the US began a campaign of airstrikes, known as “Operation Rough Rider,” against the Houthis, the Iran-backed militant group that controls much of Yemen and has been firing at commercial ships and military vessels in the Red Sea since the beginning of the war in Gaza in 2023.

The Biden administration, as well as Israel’s military, also carried out a number of strikes against the Houthis, but the ongoing US campaign is far more extensive. There have been at least 250 reported airstrikes so far, according to open-source data collected by the Institute for the Study of War and the American Enterprise Institute.

According to some reports, more than 500 Houthi fighters have been killed, including a number of senior commanders, though the group tends to be tight-lipped about its casualties. The Yemen Data Project, a monitoring group, also documented more than 200 civilian casualties in the first month of bombing. The largest strike so far, on a key oil terminal on Yemen’s coast, killed more than 74 people last week.

There's almost no chance that these air strikes will do anything substantial, except kill a lot of people. After all Saudi Arabia bombed the Houthis tens of thousands of times, and they aren't winning.
What is more interesting is how the Houthis have exposed some weaknesses in our drone program.

Houthi rebels in Yemen have shot down seven U.S. Reaper drones in less than six weeks, a loss of aircraft worth more than $200 million in what is becoming the most dramatic cost to the Pentagon of the military campaign against the Iran-backed militants.
According to defense officials, three of the drones were shot down in the past week — suggesting the militants' targeting of the unmanned aircraft flying over Yemen has improved.

There is also something else, but I'm not sure what to make of it.

US fighter jets appear to be using advanced "StormBreaker" precision glide bombs in combat against the Houthis, part of the intense bombing campaign against the Iran-backed rebels.

An image of what looked like an unexploded, US-made bomb half-buried in the sand began circulating on social media Thursday. Open-source intelligence accounts geolocated the image to Yemen's southern Shabwah governorate.