GETTY Crown Prince Mohammad bin Salman, right, has branded Ali Khamenei a 'new Hitler'

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Referring to attempts to make a peace deal with Nazi leader Adolf Hitler before the outbreak of the Second World War the Crown Prince appeared to rule out peace. Prince Mohammad bin Salman said: “We learned from Europe that appeasement doesn’t work. “We don’t want the new Hitler in Iran to repeat what happened in Europe in the Middle East.”

The latest verbal attack comes as tensions in the region are reaching breaking points following a battle for supremacy by regional powers. Relations between the two nations have raged amid the ongoing civil war in Yemen in which they back different sides. Saudi Arabia and Iran are said to be on the brink of war as tensions in the Middle East reach a breaking point.

War in Yemen: Latest shocking photos from the forgotten war Mon, November 6, 2017 According to reports, the Saudi-led coalition launched several airstrikes on Houthi positions across war-affected Yemen after Houthi rebels fired a ballistic missile at Riyadh that was intercepted near the Saudi Arabian capital Play slideshow REUTERS 1 of 15 A still image taken from a video distributed by Yemen's pro-Houthi Al Masirah television station shows what it says was the launch by Houthi forces of a ballistic missile aimed at Riyadh's King Khaled Airport

The regions of Qatar, Yemen, Syria and Lebanon are also embroiled in the bitter conflict. Tensions increased a few weeks ago between the two countries when Saudi Arabia accused Iran of being behind a ballistic missile attack on a Riyadh airport. The missiles were intercepted and Saudi Arabia said they perceived the attack as a “declaration of war”.

Saudi Arabia's Foreign Minister Adel Al-Jubeir said: “The kingdom will not stand by and will not hesitate to defend its security. “We must stand together”. The regional director of the Middle East and Africa at the Economist Intelligence Unit, Pat Thakar, said that it would not take much for tensions in the region to flare up. Saudi Arabia and Iran have rival interests and alliances across the Middle East.

GETTY Iran and Saudi Arabia are backing different sides in the Yemen conflict

The Gulf Kingdom is said to be stockpiling billions in deadly weapons in anticipation of a conflict. They have agreed to pay $7billion for munition armaments from US defence contractors, inside sources have claimed. Raytheon, a US contractor, and Boeing are said to be the companies involved in the deal and is part of the $110billion (£82billion) weapon agreement that occurred during Donald Trump’s visit to the Middle Eastern nation in May.

GETTY Donald Trump has reportedly signed a huge weapon deal with Saudi Arabia