(AGI) Baghdad, Sept 21 - Iraqi security forces killed 13Islamic State (IS) jihadists in clashes outside the Universityof Tikrit, capital of the Saladin province. A security sourcesaid that ground forces had launched a large-scale attack onpositions held by IS terrorists. The military also destroyedseven vehicles. According to official figures, the Iraqi armykilled 3,549 terrorists last month, 920 in the Saladinprovince. . .