Speech delivered on February 8, 2018 by Ayatollah Khamenei, the Supreme Leader of the Islamic Revolution, in a meeting with commanders and personnel of the Air Force of the Islamic Republic of Iran Army. 
The meeting was held in Imam Khomeini Hussainiyah on the occasion of the historic pledge of allegiance of Air Force officers to Imam Khomeini on the 19th of Bahman of 1357 [February 8, 1979].


[…] The oppression of arrogance should be clarified. Today, the cruelest and the most oppressive system in the world is the US government. It is more oppressive than everyone else. You witnessed how bad, oppressive and savage ISIS was. The US government is even worse than them. The US government is the same apparatus which created the likes of ISIS – not just ISIS itself. It facilitated the tasks for them. It acted as the cause.
This is not just our claim, rather they themselves have acknowledged this. The person who is the US President in the present time used to constantly highlight the fact, in his electoral campaign, that the creation of ISIS was a measure adopted by the Democrats – the opposite party. He would repeat this over and over again and he was right. There was much evidence and proof for this claim. In the present time too, there is such evidence. It was they who created ISIS. It was they who strengthened it. It was they who offered ISIS their weapons and their financial support and the like. Most probably, it was they who taught certain methods to them.
Those savage American organizations which are dependent on the US administration – such as Blackwater and the like – are carrying out the same tasks as well. They know these methods to perfection. They are experts at these savage acts against humanity. Most probably, it was they who have taught such methods to ISIS. Otherwise, how does such and such a poor creature from the Caucasus know how to torture an individual, how to torture  people by drowning them gradually (waterboarding) and how to burn them little by little? Probably, it was they who taught them these methods.
Despite the fact that the US is the cruelest and most merciless government in the world, it is an advocate of human rights in its propaganda! It is an advocate of the rights of the oppressed, it is an advocate of animal rights! Well, they should be disgraced. These things should be said. These things should be promoted at an international level. Notice what oppression they have committed against Palestine. In the present time, the Palestinians are subject to oppression and cruelty on a daily basis. It is one, two, ten, twenty, seventy years now that this oppression has been continuing and the Americans have been behind it. In the present time, they are behind it as well. Well, this should be explained.
Another example is their oppression against the Yemenis. In the present time, Yemen is being bombarded on a daily basis. The people are being bombarded, various places are being bombarded, markets are being bombarded, the infrastructure of the country is being bombarded. By whom? By the US allies who are approved by the Americans. It is the Americans who provide them with weapons. It is they who help them. They watch the scene delightfully and they do not raise the slightest objection and do not show the slightest frown on their faces. Of course, there are some people among them – for example, writers – who make some objections, but the US administration does not pay any attention to them at all. That is while they go and display some pieces of scrap iron with complete shamelessness and say that these pieces come from the missile given to the Yemeni fighters by Iran!
They make a groundless claim. Yemeni fighters and mujahids are under siege. It is not possible to give them anything. If it was possible, we would give them a hundred missiles – not one! But it is not possible to give them anything. They are oppressed: “Be an enemy of the oppressor and helper of the oppressed” [Imam Ali, Nahj al-Balagha]. If you can help the oppressed, you should do so. We are standing firm. On the issue of the Resistance, the Americans decided to uproot the Resistance in Western Asia [Middle East] and they were confident that they would accomplish this task. We are standing firm and we have said that we would not allow them to do so. Today, it is proven to everyone in the world that they wanted to do so, but that they failed and what we wanted to do so and we succeeded. Everyone in the world has understood this. Injustice should be confronted. This was about foreign injustice, but the same is true of domestic injustice (within Iran) and it is perhaps of higher priority because of a number of reasons. […]