They are an international elite unit created by NATO to carry out missions where no other could hope to succeed. A mix of Seals, Delta Force, British SAS and French, German and Polish SpecOps operators. Led by a former Navy Seal, Lieutenant Abe Talley. This is Echo Six. Even before they finish training a crisis develops that requires their unique and bloody brand of soldiering.

A raid on a drug trafficker's factory uncovers a secret that sends a cold chill through the heart of NATO. An Iranian cleric, captured in the raid, tells of a conspiracy at the heart of Ahmadinejad's Iranian government. A terrorist group, part of the Revolutionary Guard, is on a mission to acquire nuclear warheads. Weapons which will enable them to launch a conflict that would threaten the peace and security of the world, and trigger Armageddon.

North Korea has achieved a breakthrough with nuclear warheads and is about to arm their strategic missiles - weapons that could set the world ablaze. The Echo Six unit commander, Abe Talley, is ordered to take his men across the 38th Parallel. Their mission is to locate and destroy the nukes, as well as their creators. They must enter the heart of the most secretive, repressive, and brutal nation on Earth - and somehow find a way back.

The North Koreans have new allies in their quest to unleash a nuclear fireball on their hated neighbors. And this time, they are about to succeed. Chechen rebels possess the prize the North Koreans desire more than anything else: nuclear warheads. The deal is done and the weapons are loaded on board a train. But this is no ordinary train. The Trans-Siberian Railway is the longest railroad in the world. Destination Pyongyang.

The war in Syria has become a massive, life or death struggle between two Islamic foes, the Syrian Army and the rebels. Each tries to outdo the other, with bigger and better weapons. Until they cross the line and start production of the deadly CX9 nerve gas. The time for the West to watch is over. Now it's time for direct action.

After a blazing operation to destroy Syrian chemical weapons, it is time for Echo Six to take a well-earned furlough. Until Lieutenant-Commander Talley's girlfriend disappears in the war-torn city of Beirut. And Hezbollah kidnaps a senior member of the United Nations. NATO orders the elite Special Forces unit to locate and recover the diplomat. The trail leads to a Hezbollah refugee camp. Located on the Southern Lebanese border with Israel, it is home to some of the worst, most vicious fighters in the Middle East.

The Chinese have arrested a Buddhist monk on charges of espionage and sentenced him to death. Unknown to his captors, this is no ordinary monk. David Campbell is the stepson of the wealthy White House Chief of Staff. David turned his back on the trappings of Western civilization and adopted the lifestyle of a Tibetan Buddhist. The White House is adamant he must be brought home. However, they cannot involve American forces, in what would amount to an act of war on China. The solution? Echo Six.

Chinese Islamists are poised to strike at the heart of Asia, as they unleash a plan to create a state in the heart of China. NATO has uncovered a plan to blackmail Beijing with the threat of a genocidal attack. Uighur terrorists have created a weapon of mass destruction, and threaten to unleash it on the capital city of the most populous nation on earth if their demands are not met. Yet the threat is not just confined to China.

The ISIS strategy is unchanged: to expand their bloody caliphate by means of conquest and slaughter. Yet the tide has begun to turn against the brutal regime. The Russians have arrived in force, along with their legions of aircraft and armor. In spite of this, the Mullahs ignore mounting losses and continue to send jihadi fighters to probe the Syria-Iraq border. Their intentions are clear and unequivocal. Conquer and kill.

ISIS is desperate for a new source of cash to fund their brutal campaign. Rumors emerge of a cache of gold hidden in the desert outside the shattered ruins of Aleppo. Buried 70 years before, the bullion is plunder from the Second World War. Treasure that ISIS is searching for, and would fund a devastating new offensive. If they succeed, hundreds of thousands of lives are at stake, and Syria will once more become a blazing pyre. NATO issues orders for the elite Special Forces unit Echo Six to drop into Syria to counter this new threat.

An ISIS terror group snatches the US ambassador in France, the latest high-level kidnap. After a failed Turkish rescue effort, the president demands they assign the best NATO unit to the task. That unit is Echo Six, led by Lieutenant Commander Abe Talley, and each man is a veteran of an elite NATO unit. Yet Echo Six is about to come up against an enemy force that is equally well-trained, well-equipped, and able to bring overwhelming numbers of fighters into battle.