sentences:  In November 2000 Lubbers was nominated as the next United Nations High Commissioner for Refugees, serving from 1 January 2001 until 20 February 2005.Lubbers retired after spending 32 years in national politics but remained active in the public sector and continued to occupied numerous seats as a nonprofit director on several boards of directors and supervisory boards and as an advocate, lobbyist and activist for Humanitarian, Conservation, Environmentalism, Sustainable development and Climate change issues.Lubbers was known for his abilities as a team leader and consensus builder.