The fight against ISIL is happening on many fronts, with the Iraqi army launching offensive in northern Iraq in an effort to take back Tikrit. The military has been trying to secure the main highway from Baghdad to the oil-rich city of Baiji. Tikrit lies on that route, and together with Baiji is among the army's key goals. Al Jazeera has obtained exclusive access to the operation which began on Monday. Imran Khan reports from Baghdad. Subscribe to our channel http://bit.ly/AJSubscribe Follow us on Twitter https://twitter.com/AJEnglish Find us on Facebook https://www.facebook.com/aljazeera Check our website: http://www.aljazeera.com/