The Norman Paterson School of International Affairs at Carleton University | 1,651 followers on LinkedIn. NPSIA at Carleton University | For close to 60 years, The Norman Paterson School of International Affairs (NPSIA) has been training Canada’s best and brightest graduate students in international affairs. We have well over 2,000 alumni, many of whom have gone on to key leadership positions in the Canadian federal and provincial public service, foreign governments, the United Nations, and the private and not-for-profit sectors. NPSIA offers the most comprehensive, advanced degree programs in international affairs at the Master’s and Doctoral level in Canada.