This is the heavy military hardware that the Middle East is buying up to fight ISIS

The wealthy gulf states of the Middle East are driving an explosion in military spending, much of which is being funnelled into the fight against Islamic State (ISIS or ISIL).

In fact, according to the Stockholm International Peace Research Institute (SIPRI), military exports to the states of the Gulf Cooperation Council (GCC), several of which are engaged in fighting Islamic State, have surged 71% in the last four years.

Here’s some of the heavy weaponry being bought up by Saudi Arabia, Jordan, the United Arab Emirates, Qatar and Bahrain for the fight.

Saudi Arabia and Qatar have also ordered billions of dollars worth of 'hit to kill' air defence Patriot Pac-3 missiles.

France is in the final stages of discussions with Qatar to sell 36 Rafale fighter jets, some of the world's most advanced.

Qatar bought 500 Javelin anti-tank missiles from the US in 2014, adding to the 100 bought by Oman the year before.

Saudi Arabia wants 200 Leopard 2 A7 advanced battle tanks -- German lawmakers initially blocked the sale are softening their stance.

In summer 2014, Iraq started stepped up its purchases of Hellfire Missiles, buying 5,000 and setting them back more than $700 million.

Early in 2015 the US donated 6 M1 Abrams tanks to Iraq, replacing tanks damaged and destroyed by ISIS. Iraq wants to purchase hundreds more.

Russia's Mi-28 'Night Hunter' attack helicopters have been bought by the Iraqi defence ministry since the middle of 2014.

US sources say Jordan is looking to buy Joint Direct Attack Munitions, which convert conventional bombs into precision-guided missiles.

In December, Lockheed Martin got a Saudi contract for the missile launcher system for the US Navy's Aegis class missile cruiser.

The UAE is also edging toward buying eight predator drones from the US -- the sales are awaiting the very last step of approval.

Bahrain is buying up to 100 9M133 Kornet anti-tank missiles -- they're Russia's answer to the US shoulder-mounted Javelin model.

Now see:

U.S. President Barack Obama receives a question during a press conference at the NATO summit in Strasbourg, April 4, 2009.

Here are all the NATO military ships operating on Russia's doorstep »

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