U.S. Commerce Secretary Penny Pritzker (left)talks with students in Havana in October. Pritzker led a delegation of U.S. officials who met their Cuban counterparts and businessmen to explore expanding ties. While restrictions are being removed, increased business links between the countries are limited so far.
Iran's President Hassan Rouhani leaves after a televised speech in Tehran on Dec. 16. Iran has been dismantling parts of its nuclear program as required under an international deal, and some sanctions could be lifted as soon as January.