“I’m guessing the strike is from the Saudi’s.”
Correct.
“Do they want to control this land for strategic reasons?”
They want the Houthis to stop attacking their energy infrastructure.
The Yemenis have staged numerous border incursions over the years. North aYemen used to be run by Communists. South Yemen was freer and more pro-Saudi. Iran has come in to stir up hatred against the Saudis, their arch enemies. The Iranian involvement has raised the stakes in the region.
The Iranians have engaged in inciting the Saudi Shi’a who make up about a third of the population of the Eastern Province. Iran wants to take down the House of Saud. Having spent 5 years in the Kingdom, including during the entire first Gulf War, it is hard to understate the hatred between the Saudis and the Iranians.