The British Foreign Secretary David Cameron has become the victim of an unknown prankster who claimed to be former Ukrainian President Petro Poroshenko, reports The Telegraph. According to the media, the secretary and the prankster initially exchanged several messages. A few days ago, they had a video call. Cameron ended the conversation when he became suspicious because the prankster asked him for contacts of British government members. The British Foreign Office stated that they conducted an investigation and determined that the call was indeed a hoax. The Office did not specify who was behi…