ISIS fighters at a checkpoint in the northern Iraq city of Mosul
ISIS fighters at a checkpoint in the northern Iraq city of Mosul.Reuters

The astonishing speed and calculated strategy with which Islamic terrorist group ISIS is invading Iraq has taken the world by surprise. However, reports have now emerged that US intelligence officers had briefed Pentagon on the threat as early as January.

Though top officials in the Barack Obama government are showing concerns at the progress made by the ultra-radical ISIS, a senior US intelligence official has now revealed that Pentagon was warned of the growing threat from ISIS militants from the beginning of the year.

"During the past year, the intelligence community has provided strategic warning of Iraq's deteriorating security situation," Fox News quoted  the official. "We routinely highlighted (ISIS') growing threat in Iraq, the increasing difficulties Iraq's security forced faced in combating (ISIS), and the political strains that were contributing to Iraq's declining stability."

While US Secretary of State John Kerry has maintained that "nobody expected" the capture of key Iraqi cities by ISIS militants, there is suspicion raised on the manner in which the oil-rich Mosul fell into ISIS hands, without any real resistance from the Iraqi Army.

Russia Today suggested that the 10 June taking of Mosul was shaped and controlled out of Langley and other CIA, Pentagon outposts as the next stage in spreading chaos in the world's second largest oil state.

It is understood that details were also provided to the UK government. A report in the Telegraph also stated that both MI6 and CIA were given a detailed outline on the planned takeover of northern Iraq by jihadists and their allies as early January.

It was none other than the head of intelligence for the autonomous Kurdish regional government who reportedly sent in numerous warnings to the US and the UK repeatedly. Even that was ignored by both countries.

Now the question is why did the US decide not to issue at least a warning to the Iraqi government? Despite getting such alarming intel reports, the US chose not to act on the matter.

What is the US's hidden agenda for Iraq? The war in Iraq has completely sidelined the focus on Syria, and the invasion has come at a time when Iraq was looking at increasing its exports to other countries, besides the US.

A multi-sourced corroborative report recently noted that in 2012 the US forces had trained several hundreds of ISIS men for covert operations to destabilize Syrian President Bashar al-Assad's government. 

While the war in Iraq still rages on, in a recent development, the US government that had previously refused ' to provide air-support 'for the time being, has now sent its first batch of soldiers to assist the Iraqi government.