Muslim terrorist Khalid Sheikh Mohammed sent a letter to Obama days before the ex-President left office calling him ‘the head of the snake’ and warning of another 9/11

The self-proclaimed mastermind of the 9/11 attacks sent a letter to Barack Obama during his last days in office to tell him September 11 was a direct result of American ‘oppression and tyranny’.

The 18-page letter to ‘the head of the snake, Barack Obama,’ was written by Khalid Sheikh Mohammed, the accused 9/11 mastermind.

He has been held at the prison at Guantanamo Bay since 2006 after being captured in Pakistan in 2003.

During an interrogation in 2007, he confessed to being behind the 9/11 attacks.