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The SBU Security Service of Ukraine prevented more than 400 acts of terrorism in different regions of Ukraine in the past 3.5 years.

"Russia has been waging a subversive war against Ukraine on all fronts. The SBU prevented more than 400 attempts of terrorist attacks in different regions of Ukraine in the last 3.5 years," President of Ukraine Petro Poroshenko wrote on Twitter.

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According to him, a significant number of terrorists who were planning subversive activities were trained in training camps deployed in Russian territory.

Earlier, chief of the SBU Security Service of Ukraine Vasyl Hrytsak said SBU officers had blocked the Russian security services' plans to conduct latent federalization and autonomization in several Ukrainian regions.