Saudi Arabia’s rulers threatened to make it easier for terrorists to attack London unless corruption investigations into their arms deals were halted, according to court documents revealed yesterday.

Previously secret files describe how investigators were told they faced “another 7/7” and the loss of “British lives on British streets” if they pressed on with their inquiries and the Saudis carried out their threat to cut off intelligence.

More than one million Iraqis have died because of the war in Iraq since the US-led invasion of the country in 2003, according to a study published Wednesday.

A fifth of Iraqi households lost at least one family member between March 2003 and August 2007 due to the conflict, said data compiled by London-based Opinion Research Business (ORB) and its research partner in Iraq, the Independent Institute for Administration and Civil Society Studies (IIACSS).

The study based its findings on survey work involving the face-to-face questioning of 2,414 Iraqi adults aged 18 or above, and the last complete census in Iraq in 1997, which indicated a total of 4.05 million households.