Unfortunately he is not the first to get the idea that peace will come through the killing of the kuffar. From [1] CourtNewsUK (thanks to a tea-loving snail):

BENOMOR:CRAZED IMMIGRANT BEAT MAN TO DEATH WITH HIS BARE HANDS HARLINGTON, MIDDSX. A Tunisian immigrant beat a man to death with his bare hands and feet believing Allah was telling him how to bring about world peace, a court heard. Bearded Laidi Benomor, 30, attacked six people as he went on the rampage in the Harlington High Street near the Holiday Inn at Heathrow.