Prime Minister Justin Trudeau's week-long trip to Africa began Friday with an official welcome at the airport in the Ethiopian capital of Addis Ababa. Trudeau is looking to forge new economic and social-development ties on the trip but he is also hoping to secure some African support for Canada's attempt to win a seat on the United Nations Security Council in June. He asked Toronto Raptors President Masai Ujiri to join the delegation to lend his support to the trip.