Is the Iliad real or fiction?

According to Homer experts, the Trojan War told in the epic happened when the Mycenaean and Hittite civilizations were at their peak. The memories of Trojan War told from generation to generation, reached to Homer through a 400 years of period. Therefore it is impossible to prove the historical essence of the war. Probably we will never know whether the heroes like Paris, Akhilleus, Hektor, Agamemnon really lived or not. But according to Mycenaean, Hittite and Egypt texts, there are some information about wars in 2000 BC, in the Bronze Age, in order to gain hegemony over Troy/Ilios and Wilusa. According to the experts, the historical essence of the war can not be obtained only from the epics. The epics and the Hittite texts written outside of Troy should be considered too. The results of excavation results of Prof. Osman Korfmann, and accordingly the researches of Hittitology and Homer experts accept that there is real essence in Iliad and around the circle of this essence there is world of epos.