Washington has used the existing hostility towards Iran among the gulf countries to envision the “Islamic Republic” as an enemy trying to occupy the Middle East. The aim was to keep the Arab “golden goose” (monies) flowing into the pockets of the United States of America to feed its economy.
The biggest shock to the Arab countries came when former US President Barack Obama declared that Iran no longer posed a nuclear threat to its neighbours, withdrew the nuclear dossier from circulation, and thus made Iran a state that the United States and Europe could legitimately deal with.
This is what has angered US businessmen and, in consequences, the new President of the United States, Donald Trump: the end of the Iranian nuclear file and the proof of the absence of Iranian nuclear bombs means the closure of a large source of livelihood for Washington. It was no longer possible to use the nuclear dossier as blackmail leverage against the countries of the Middle East. This is not what Trump wanted, he who considers the Arabs have only money- and he wants it.