Sheikh Hamad bin Khalifa Al Thani, the Emir of Qatar, opened here today the thirteenth session of the United Nations Conference on Trade and Development (UNCTAD) in the presence of a number of Heads of State and ministers concerned with trade and development from UNCTAD's 194 member states taking part. The conference will discuss ways of enhancing investment, trade, entrepreneurship and development policies to foster sustained economic growth for sustainable and inclusive development.