It is with less than surprise that a nation living by 7th Century criminal laws also uses 7th Century military tactics.
In this particular case, Saudi Arabia is trying to win the war against Yemeni rebels by creating a famine.

“Yemen Economic Corporation, one of Yemen’s largest food storage centres, was destroyed by three coalition missile strikes in Hodeidah last Tuesday, according to the Houthi-controlled defence ministry. The corporation had enough food for the entire country. The government’s military food storage centre in Hodeidah was also targeted and destroyed on Tuesday, according to the defence ministry.
Also in Hodeidah, country’s second largest dairy plant was hit by five Saudi missiles on Wednesday, killing at least 29 people, mostly employees, and injuring dozens of others.”

'Starve them out' was a successful military tactic centuries ago. All things old will be new again.

Of course it isn't enough just to blow up the food of a country that imports 90% of its wheat and 100% of its rice, and where nearly half of Yemen's 26 million people are classified as severely food insecure.
To create a famine you also need to make sure that the people there can't get more food.

Warships from the Saudi-led coalition have blocked a vessel carrying more than 47,000 tonnes of wheat from entering a Yemeni port, demanding United Nations guarantees that the cargo would not go to military personnel, shipping sources said on Thursday.”

Then, if you are really serious about making sure that people there can't eat, you have to make sure that they can't grow food either. Saudi Arabia has that covered as well.

“Airstrikes as well as fighting on the ground has knocked out electrical infrastructure, cutting off power in many urban areas and stopping the operation of crucial pumps that supply Yemen’s cities with drinking water. “We’re worried that this system will break down shortly; Aden is a dry, hot place, and without water people will really suffer,” UNICEF representative Harneis told reporters…
The no-fly zone and blockade enforced by Saudi Arabia and its coalition partners has effectively blocked the delivery of medical aid and supplies for the last two weeks, exacerbating the developing crisis.”

You gotta hand it to be the Saudis - they play to win.
They even managed to get the UN Security Council to impose an arms embargo on the Houthi rebels in just three weeks. In comparison, it took the UN Security Council more than five months to impose an economic embargo on ISIS, and even then the United States couldn't do it. It had to be pushed through by Russia for us.

America has been so far behind the curve that three weeks after the bombing started, the United States has still not launched a rescue mission for the hundreds of Americans trapped in Yemen. India managed to get 5,600 of their citizens out.
So we can't be bothered to get our citizens out of the war zone, but we can help refuel the Saudi bombers, expedite delivery of ammunition, and giving the Saudi bombers the intelligence they need to pick targets in Yemen.

Well, the Saudis have a good reason to bomb Yemen and turn it into a Hell Hole, right? They told the world that their objective was to “restore the legitimate government” and protect the “Yemeni constitution and elections.”
The Yemen president that Saudi Arabia is willing to lay waste to an entire country in order to restore was indeed the legally elected president...an election with only one candidate.
He won with 99.80% of the vote, a margin that would have made Stalin blush. The Houthis boycotted the election.
Hadi's term in office was only supposed to last until 2014, when an another election was to be held. It never happened.

So while the legitimacy of Hadi is questionable, the Saudi claim is laughable.

“The need to protect constitutions and elections is a rather strange message from the representative of an absolute monarchy … The kingdom’s real motives seem clear if one looks at Saudi monarchy’s history of not allowing regional competition of any kind, while consistently combating efforts to build democratic governments that empower the people…

The Saudi-led war has created chaos in Yemen, which has allowed al-Qaeda to go on the offensive. The Houthis are the sworn enemies of al-Qaeda. Thus we are now at war with both sides of this war.
So what do the Houthis want that Saudi Arabia feels is must stop? The one thing that the United States cannot support.

Among other demands, Houthi leader Abdulmalek al-Houthi requested that fuel subsidies, which had been cut significantly in late July, be reinstated. If the government failed to meet an ultimatum, he said, "other steps" would be taken. The Houthis were also demanding a more representative form of government that would reflect the seats allocated to political groups and independent activists during Yemen's 10-month National Dialogue Conference, which mapped out the political future of Yemen after its 2011 uprising.

It appears we put ourselves on the same side as war criminals, while harming our War against Terror, in order to defeat an attempt at a more democratic government.