This triggered the largest Saudi military operation since the Iraqi invasion of Kuwait in 1990. Yemen's government, as well as the Arabs, accused Iran of arming the Houthis. Iran has heavily criticized Saudi Arabia for their intervention in the Houthi insurgency in Yemen. Iran's then president Ahmadinejad was quoted as saying: "Saudi Arabia was expected to mediate in Yemen's internal conflict as an older brother and restore peace to the Muslim state, rather than launching military strike[s] and pounding bombs on Muslim civilians in the north of Yemen," whilst Saudi foreign minister Saud Al Faisal counter-accused Iran of meddling in Yemen's internal affairs. Ahmadinejad went even further saying: "Some Western states invaded the region (Afghanistan and Iraq) in the wake of the 11 September attacks, whilst Al-Qaeda's main hub was located in another country in the region, which enjoys huge oil revenues and good relations with the United States and Western countries. There are some countries in the Middle East region that do not hold even a single election, don't allow women to drive, but the US and European governments are supporting their undemocratic governments," in reference to Saudi Arabia. In 2017 Saudi Prince Mohammed bin Salman called the supreme leader of Iran "new Hitler".