REUTERS

Secretary of Ukraine's National Security and Defense Council (NSDC) Oleksiy Danilov says the Russian Federation has been confronting its neighboring countries all the time and he thinks that it will break up sooner or later.

Read alsoNSDC secretary: Ukraine seeks to end war with Russia soon, but not going to make concessions

"This is an artificial entity, which once was also formed at gunpoint. No one willingly joined it. This is an 'assembled territory,' which will sooner or later fall apart," he said on TV Channel 24 on June 4.

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The official added that peoples associated with Russia, for example, Ichkeria, have nothing to do with it.

"We must also be aware that this will not happen as quickly as we would like, but the fact that it will happen in our lifetime is clear," he said.

According to Danilov, Russia has had an external enemy all the time of its existence. At first, it considered the United States and NATO to be its adversaries, then this was Georgia, and now it is Ukraine.

Ukraine's Foreign Minister Dmytro Kuleba earlier said that Ukraine would not allow the red lines that relate to national security, sovereignty and territorial integrity to be crossed. So, negotiations with Russian-backed forces of the so-called "Donetsk and Luhansk People's Republics" ("DPR" and "LPR"), federalization and Russia's other demands are unacceptable to Kyiv.