BERLIN, August 23 (Itar-Tass) - It is possible to save Ukraine's territorial integrity only by federalization, German Economy Minister and Vice-Chancellor Sigmar Gabriel said in an interview to Sunday's Welt am Sonntag, published on Saturday.

Ukraine’s territorial integrity can be saved only if the offer is made to the regions where most of the population are Russians. A well-considered conception of federalization is viewed as the only way, he said.

Ukrainian President Petro Poroshenko repeatedly stated he opposed federalization. In his words, "it has no grounds in Ukraine".