Ukrainian President Petro Poroshenko has accused Russia of brutally violating the fundamental norms and principles of the UN Charter.
Addressing the general debate of the UN General Assembly's 70th session in New York, US, Poroshenko said Russia conducted an open and unprovoked aggression against Ukraine with annexation of Crimea in February 2014, despite legally pledging to respect the sovereignty, territorial integrity and inviolability of the borders of the country.
Poroshenko said: "Bluntly and brutally violating international law and shocking the whole world community [...] Despite the fact the until now Russia refuses to officially admit its direct military invasion, today there is no doubt that this is an aggressive war against my country."
According to the Poroshenko, Russian leadership called for removal of insignias from its military personnel and identification marks of its combat equipment in a bid to mislead the international community.
Moscow is also said to have abandoned its soldiers captured on the battlefield and cynically used mobile crematoriums to eliminate traces of its crimes in Ukrainian soil.
In addition, Russia allegedly exercised its veto right twice while the UN Security Council was considering questions related to Ukraine.
Poroshenko said: "At the outset, Russia blocked a draft resolution condemning 'fake referendum' on Crimea's annexation in March 2014.
"The second time, Russia put its shameful veto on the draft resolution on establishment of the International Tribunal to investigate and bring to justice all responsible for Malaysian MH17 plane crash."
The president urged UN to gradually limit Russia's veto power, followed by its cancellation, and also launch a worldwide campaign to pressure the country to immediately release all Ukrainian citizens who have been held hostage or sentenced.
According to the UN reports, approximately 8,000 people including Ukrainian soldiers, civilians and members of the armed groups have been killed, while more than 17,800 sustained injuries since the crisis began in eastern Ukraine in mid-April 2014.
Image: Ukraine President Petro Poroshenko addresses the general debate of the UN General Assembly in New York, US. Photo: UN Photo / Cia Pak.