Qatar Airways signed an agreement with Boeing Co. for seven aircraft worth $1.3 billion. Qatar investors are working with U.S. firm Hines Group on a $700-million, 2.5-million-sq-ft real estate project in Washington, D.C., called CityCenter DC.

At the New York City forum, Qatar's Prime Minster Sheikh Hamad bin Jassim bin Jabr al-Thani said he “expects the U.S. will remain our most important partner” as the country plans $27 billion worth of development.