When a group of about 50 ZANU–PF activists briefly invaded Gwenoro in May 2000, Smith played down the incident, saying the intruders were just bored and out of work. "There's no politics on the farm," he said. Five months later, in England to address the Oxford Union, Smith described Mugabe as "mentally deranged". The President announced in response that Smith would be arrested and tried for genocide if he ever came back to Zimbabwe, a threat that Smith mocked. "I would love that. Let him try it," he said—"It would give me the chance to tell the world the truth about this gangster ... I will give him the date and time of arrival of my plane so he can meet me at the airport." A mass of reporters descended on Harare International Airport on 7 November 2000 to witness Smith's arrest, but far from being detained, the former Prime Minister was greeted cheerily by immigration officers and allowed through without any obstruction. Telling the waiting pressmen that he was disappointed not to have met any confrontation, he commented: "We have a president here who is mentally unstable and makes statements that have no bearing on reality", and went home unmolested.