"In April 2015, the General Staff of the Russian Federation approved another working plan for the occupation of left-bank Ukraine. The meeting on the approval of this plan was held on April 8-9 in St. Petersburg, in the headquarters of the Western Military District," he said.

According to Herashchenko, only 15 days are necessary to occupy the whole left-bank Ukraine in accordance with the plan of the General Staff of the Russian Federation. The main goal is to rapidly gain control over the territories and communications, without the seizure of large cities or regional centers.

"In accordance with the plan, battalion tactical groups of the Russian regular army, united in a group of troops called ‘Sever’ (North) would invade the territory of Ukraine in two stages – first in Kharkiv and Donetsk regions, and then in Poltava, Kyiv and Chernihiv regions," Herashchenko said.

By force of habit, the invasion is planned to be disguised under the attacks of the fighters of the DPR and LPR militant organizations, who have gained strength and want to restore the constitutional order in Ukraine, without the return of Viktor Yanukovych.

"The plan to capture left-bank Ukraine to the River Dnipro is detailed in a document [entitled] ‘A report on the participation of the Sever grouping in special operations,’ that is classified as top secret in the explanatory note to the plan," Herashchenko said.

"Together with these basic strategic documents, we’ve got a set of technical documents with the details of strikes, landings, lists of takeovers of strategic facilities and communications," he said.

"At the same time, one of the group's strategic objects, which according to the plans of the General Staff of the Russian Federation is necessary to be seized, but not destroyed, is the compressor stations of the main gas pipelines, by which gas supplies from Russia to Europe are still going on," Herashchenko said.

According to Herashchenko, the General Staff of the Russian Federation is planning actions to discredit the Ukrainian military.

"In simply terms: they are planning to shoot a few dozen residents of the militant-occupied Ukrainian territory of the Donbas, to film this and to blame the Ukrainian side for this," he said.

According to Herashchenko, a similar plan was developed by the command of the Southern Military District of Russia. The purpose of the Southern Group of Forces is to hit Zaporizhia and Melitopol through Berdiansk and Mariupol and to get access to the Isthmus of Perekop in order to open land routes to Crimea.

However, expert-volunteers from the Myrotvorets group were able to get the secret documents of the Russian General Staff during a special operation, for which they are not asking for rewards from the state," Herashchenko said.

In addition, Herashchenko said that the details of this operation were not subject to be disclosed at the moment, as a channel for secret documents from deep inside the Russian General Staff continues to operate and the publication of its working methods could lead to the loss of a channel of information, and casualties.

"The plan of aggression against Ukraine was received at the end of April and sent to the competent authorities of Ukraine to [augment] the plans for the defense of the country," he said.

Herashchenko said the decision by the United States to deploy weapons, including its most advanced warplanes, in Eastern Europe had been influenced by knowledge of the Russian invasion plan.

"Our foreign partners were also informed about these documents, which in the end had an impact on decision-making for the deployment of heavy weapons in Eastern Europe and the Baltic States," Herashchenko added.