It reminded of the times when Vice President Dick Cheney visited the CIA to tell its analysts what they were supposed to write about "Saddam's weapons of mass destruction".
Haley covered the advice she was giving to the DIA as a press conference. Her props were alleged missile parts recovered somewhere at some unknown time. She claimed that these were provided by the Saudis and the UAE and showed debris of missiles fired from Yemen. Haley further claimed that Iran had delivered such missiles to Yemen in breach of UN resolution 2231 that restricts such transfers.
There are several possible explanations of where the Houthi and their then allied Yemeni army might have acquired such missiles. But even if one accepts that Iran delivered these, it is unknown when such deliveries might have taken place. It could have happened years before the UN resolution restricted such deliveries. Haley's show proved nothing with regards to any breach.
Haley claimed that the UN had found that the missile debris on display was from an Iranian Qiam missile. But the UN has made no such findings. It only said that the debris and Qiam missiles "had similar structural and manufacturing features". The Iranian Qiam missile ..
.. is a short-range ballistic missile designed and built by Iran. It was developed from the Iranian Shahab-2, a licensed copy of the North Korean Hwasong-6, all of which are versions of the Soviet Scud-C missile.
There are many variants of the Soviet Scud family (A, B, C) produced in various countries and they naturally all have "similar structural and manufacturing features".
The Yemeni military bought Soviet Scuds (pdf) and Scuds were used in earlier conflicts between north and south Yemen. The Yemeni military also bought North Korean Hwasong 5 and likely also Hwasong 6 missiles directly from North Korea. The Yemeni army has over 30 years of experience with such missiles and qualified personal to modify these if needed.
Haley simply lied about the UN findings. They do not say what she claims. Indeed the UN panel acknowledged that the similarities found do not prove the origin:
[T]he panel said it “as yet has no evidence as to the identity of the broker or supplier” of the missiles, ..
Haley pointed to one alleged part of the missile debris that bore a logo of an Iranian company. She neglected to point out that the UN panel also found U.S. made hardware as part of the missiles. Neither proves where the missile came from.
The Zionist lobby wants the U.S. to wage war on Iran and Nikki Haley is in their pocket. The extremely rich, ultraright Zionist Sheldon Adelson was the biggest sponsor of her political career.
Haley neglected to point out that Yemeni missiles have killed no one in Saudi Arabia while Saudi Arabia has killed then-thousands of Yemeni civilians with U.S. provide bombs and missiles. It is Saudi Arabia that is blockading Yemen and causing a very large famine. The Saudis recently claimed that they has lifted the blockade but even USAID says that there is no sign that the blockade has changed. Hundreds of people in Yemen are dying each day for lack of food and simple medicine.
In view of such a catastrophe one might even hope that Iran provides hundreds of missiles to Yemen to push the Saudis into ending their genocidal policies.
Haley's show did not go down well. She convinced the Saudis of course but neither U.S. media nor European governments accepted her show. As the NY Times correctly writes:
.. the evidence she showcased at Joint Base Anacostia-Bolling — ... — fell short of proving her claims.
The United States acknowledged it could not say precisely when the weapons were transferred to the Houthis, and, in some cases, could not say when they were used. There was no immediate way to independently verify where the weapons were made or employed.
The Trump administration is looking for reasons to push more sanctions on Iran. It especially wants the EU to take part in a renewed sanction regime. A "ballistic missile threat" might be a way to get there. France and Germany had offered the U.S. to follow its anti-Iranian course with regards to ballistic missiles if it keeps busting the nuclear agreement with Iran off the table.
Haley's stunt shows that this was an extremely stupid move. If one makes an offer to the U.S. that one will follow policy A when B is proven, the U.S. will simply lie and fabricate evidence to claim that B is there.