Barack Obama yesterday warned a pastor his plan to burn copies of the Koran would spark bloodshed across the globe.
The US president urged Terry Jones not to go ahead with his bonfire in protest at Muslim extremists on the ninth anniversary of 9/11 - fearing it will boost recruitment for terror groups and put US troops in Afghanistan at even more risk.
And Interpol warned if the controversial stunt is put into action, innocent people could be killed in revenge terror attacks throughout the world.
Mr Obama said: "This is a recruitment bonanza for al-Qaeda.
"You could have serious violence in places like Pakistan or Afghanistan.
"It could increase the recruitment of individuals willing to blow themselves up in American cities or European cities.
"I hope he understands that what he is proposing to do is completely contrary to our values as Americans."
Interpol added: "If the proposed Koran burning goes ahead there is a strong likelihood that violent attacks on innocent people would follow."
Muslims are said to be planning a number of protests across the world, including one in London, over Jones' book burning. There were angry demos in Afghanistan and Pakistan yesterday where rampaging protestors burned US flags.
Nato spokesman James Judge warned the Koran burning stunt is "precisely the kind of activity the Taliban uses to fuel their propaganda efforts".
Daily Mirror