In recent months, Houthi rebels claimed they have fired missiles at tourist destinations in the Middle East.
She also referred to a "Shark 33" naval drone rigged with an outboard motor that she said could blow a "six-foot wide hole" in a ship.
The UN experts who traveled to Saudi Arabia to examine the wreckage of two rockets fired on July 22 and November 4 found that they had "common origin" as they were both "consistent" with the diameter of Scud missiles, a variation of which is Qiam-1, made and designed in Iran, UN General Secretary Antonio Guterres said in a confidential report to UN Security Council last week, seen by AFP and Reuters.
Iran's "ballistic missile and advanced weapons are turning up in war zones across the region".
Standing before an exhausted missile that Washington says was made in Iran, shipped to Yemen and fired at Riyadh's worldwide airport, Nikki Haley, the American ambassador to the United Nations, declassified the USA government's findings of Iran's military activities in the region on Thursday, warning of its rapid expansion and broad ambitions.
The equipment was collected by Saudi Arabia and the United Arab Emirates.
The Trump administration accused Iran on Thursday of violating United Nations resolutions, unveiling what US officials said was proof that Iran is exporting missiles and other military hardware to a rebel group in Yemen.
"Ambassador Haley will offer irrefutable evidence that Iran has deliberately violated its global obligations and has tried and failed to cover up these violations", the mission said.
Haley will discuss what the mission called Iran's "ongoing destabilizing activities in the Middle East and elsewhere in the world". He is a leading expert on Iran and U.S. foreign policy, a businessman and president of the International American Council.
"This purportedly evidence, put on public display, is as much fabricated as the one presented on some other occasions earlier", he said.
To prove the case that Iran-made missiles have been fired from Yemen, the US pieced together a full-length Qiam-1, a short-range ballistic missile, constructed from the debris of two separate missile attacks against Saudi Arabia this year.
She charged that the 2015 nuclear deal to curb Iran's nuclear programme had "done nothing to moderate the regime's conduct in other areas", and accused Tehran of "fanning the flames" of regional conflict.
"Nikki Haley and Washington seem to be in an unreal world, largely because they have just lost big time".
However, I support a US boycott of these games for an additional, more sinister and pervasive reason: South Koreans are dog-eaters; South Korea is a dog-eating nation.