The United States has found itself in bed with a lot of revolting characters in the past 14 years of Global War Against Evil.
Whether it is our Warlord/Drug Lord allies in Afghanistan, our Shia jihadist allies in Iraq, or our Sunni jihadist allies in Syria.

However, our involvement in the Saudi-led coalition war against Yemen is possibly be the worst War Of Choice yet.

Human rights groups have warned about war crimes and the continued humanitarian calamity in Yemen. “Yemen in five months is like Syria after five years,” Peter Maurer, president of the International Committee of the Red Cross, said in August. “The humanitarian situation is nothing short of catastrophic. Every family in Yemen has been affected by this conflict.”
Complicit in the growing humanitarian disaster is the United States and its unchecked arms sales to Saudi Arabia and other Gulf allies. The Barack Obama administration agreed to transfer more than $64 billion in weapons and services to members of the Gulf Cooperation Council (GCC) during its first five years...

On top of the weapon sales, the U.S. provides "logistical and intelligence support to GCC [Gulf Cooperation Council]-led military operations.”
So in other words, we do everything but drop the bombs, and it doesn't stop there.
On Sept. 30, the Obama Administration reportedly helped defeat a Dutch proposal for an independent U.N. inquiry into the war crimes being committed in Yemen.
This matters because there is a law against giving military assistance to foreign forces who commit human rights abuses.

Let's not forget the Saudi-led naval embargo which has delayed the imports of food into a nation that imports 90% of its grains, threatening famine upon tens of millions of people.

So, is there war crimes being committed by our Saudi allies?
They did deliberately target a Doctor's Without Borders hospital.

“The attack on Haydan Hospital appears to have been an unlawful attack causing harm to civilians and civilian objects. The consecutive airstrikes show deliberate targeting of the medical facility - this is another sad day for civilians,” said Philip Luther, Director for the Middle East and North Africa at Amnesty International.

The Saudis followed this incident by targeting a Red Cross hospital, managing to bomb two different Nobel Peace Prize winning organizations in one month.

The International Committee of the Red Cross on Monday said hospitals in Yemen have been repeatedly and "deliberately" attacked, and urged warring factions to respect the sanctity of health facilities.

You think that's bad enough? It gets worse.

The biggest benefactors of this war and chaos has been al-Qaeda, which now controls the provincial capital of Mukalla and large part of the southern capital of Aden. The jihadists have become very well-armed.

Security officials said al-Qaida and other extremist Islamic groups in Aden obtained more than 55 armored vehicles, 22 tanks, anti-aircraft missiles and large amounts of other weapons during the fighting and hid them underground and in fields.

The Saudis have not turned a blind eye to the rise of al-Qaeda in Yemen, they've been an active partner of al-Qaeda.

Saudi Arabia's alignment with "terrorist" groups in Yemen was highlighted in June when the Saudi-backed exiled Yemeni government of Abd Rabbuh Mansur Hadi sent Abdel-Wahab Humayqani to Geneva as one of its delegates in the failed UN-sponsored roundtable talks. In December 2013, the U.S. Treasury Department designated Humayqani a "Specifically Designated Global Terrorist," having allegedly served as a recruiter and financier for al-Qaeda in the Arabian Peninsula (AQAP) and having orchestrated a car bombing in March 2012 that targeted a Yemeni Republican Guard base, killing seven....
The de facto partnership between Riyadh and AQAP is made further evident by the fact that the Saudi-led military coalition has entirely avoided bombing AQAP targets, despite its aggressive bombing of other territories under Houthi control.

It seems crazy that we are giving indirect help to al-Qaeda in Yemen through Saudi Arabia, while it commits war crimes.
And yet that still isn't the end of it, because it could still get much worse.

Just weeks after the UN said Eritrean soldiers may be on the ground in Yemen, Sudan has reportedly sent hundreds of additional troops to fight for the Saudi-led coalition.
The apparent arrival of reinforcements from Saudi Arabia's unsavory allies — both Eritrea and Sudan have dismal human rights records — not only has the potential to plunge Yemen even deeper into chaos, but it puts the United States, a de facto member of the coalition, in the extremely awkward position of backing a side that includes fighters from at least one nation that it has repeatedly criticized for committing atrocities....
The monitoring group found that Eritrea's reported compensation, including money and fuel supplies, would violate a 2009 Security Council resolution that imposed an arms embargo on the country and financial sanctions and travel bands on its leaders.

Boy, it's a good thing that we don't enforce laws against the powerful anymore, otherwise the Obama Administration would be in deep trouble.