Juan Carlos Varela Rodriguez, President of the Republic of Panama, shakes hands with UN Secretary-General Ban Ki-moon at the United Nations Headquarters, September 18, 2016 in New York. / AFP PHOTO / DOMINICK REUTERDOMINICK REUTER/AFP/Getty Images

Tennis - Croatia v France - Davis Cup Semi Final - Kresimir Cosic Hall, Zadar, Croatia - 18/9/16 Croatia's Marin Cilic in action during his singles match against France's Richard Gasquet. REUTERS/Antonio Bronic

Tennis - Croatia v France - Davis Cup World Group Semi Final - Kresimir Cosic Hall, Zadar, Croatia - 18/9/16 Croatia's Marin Cilic reacts after winning his men's singles match against France's Richard Gasquet. REUTERS/Antonio Bronic

Tennis - Croatia v France - Davis Cup World Group Semi Final - Kresimir Cosic Hall, Zadar, Croatia - 18/9/16 Croatia's Marin Cilic reacts after winning his men's singles match against France's Richard Gasquet. REUTERS/Antonio Bronic

Tennis - Croatia v France - Davis Cup Semi Final - Kresimir Cosic Hall, Zadar, Croatia - 18/9/16 Croatia's Marin Cilic reacts during his singles match against France's Richard Gasquet. REUTERS/Antonio Bronic

Tennis - Croatia v France - Davis Cup World Group Semi Final - Kresimir Cosic Hall, Zadar, Croatia - 18/9/16 Croatia's tennis team celebrate after winning a match against France's. REUTERS/Antonio Bronic

Tennis - Croatia v France - Davis Cup World Group Semi Final - Kresimir Cosic Hall, Zadar, Croatia - 18/9/16 Croatia's tennis team celebrate after winning a match against France's. REUTERS/Antonio Bronic

IranÕs Roads and Urban Development Minister Abbas Akhoundi speaks to foreign investors at the CAPA Iran Aviation Summit in Tehran, Iran, September 18, 2016. REUTERS/Tim Hepher