He wrote about this on his page on Twitter.

“Tehran is behind nearly 100 attacks on Saudi Arabia, while Rouhani and Zarif are pretending to be engaged in diplomacy. Amid all the calls for de-escalation, Iran launched an unprecedented attack on world energy supplies. There is no evidence that the attacks were from Yemen, ”said Pompeo.

Tehran is behind nearly 100 attacks on Saudi Arabia while Rouhani and Zarif pretend to engage in diplomacy. Amid all the calls for de-escalation, Iran has now launched an unprecedented attack on the world's energy supply. There is no evidence the attacks came from Yemen.

- Secretary Pompeo (@SecPompeo) September 14, 2019

At the same time, the Secretary of State called on all countries to "publicly and unconditionally condemn the attacks of Iran."

Saudi Arabia’s Interior Ministry said earlier that fires occurred at two refineries in the state-owned Saudi Aramco company after drones attack. In London, the attack of Yemeni Hussite rebels on Saudi oil facilities was condemned.

In turn, the UN Secretary General’s Special Envoy for Yemen, Martin Griffiths, expressed concern about what had happened and urged all parties to exercise restraint and prevent the recurrence of such incidents, which pose a serious threat to regional security.