Video: UNWTO assistant-secretary general talks to politics.co.uk ahead of the G20 Summit part 1

Geoffrey Lipman assistant secretary general to the UN’s World Tourism Organisation talks to politics.co.uk ahead of the G20 Summit about airport expansion, the environment and the ecnonmic impact of a decline in travel and tourism on developing economies. He explains why the UNWTO has written an open letter to world leaders at the summit requsting the issues around travel and its impact on the world economy also be considered at the meeting this week.