Photos: President Obama’s final overseas trip

President Barack Obama leaves the stage after his speech at the Stavros Niarchos Foundation Cultural Center on Nov. 16, 2016 in Athens, Greece.

resident Barack Obama delivers a speech at the Stavros Niarchos Foundation Cultural Center on Nov. 16, 2016, in Athens, Greece.

President Barack Obama looks at an exhibit during a tour of the Acropolis Museum on Nov. 16, 2016 in Athens, Greece.

President Barack Obama tours Acropolis with Dr. Eleni Banou, director of Ephorate of Antiquities for Athens, Ministry of Culture, on Nov. 16, 2016, in Athens.

President Barack Obama gestures during a tour of the Acropolis Museum on Nov. 16, 2016, in Athens.

President Barack Obama looks at an exhibit during a tour of the Acropolis Museum on Nov. 16, 2016, in Athens.

President Barack Obama, left, walks from the Parthenon during a tour of the Acropolis on Nov. 16, 2016, in Athens, Greece.

President Barack Obama walks through the Propylaia during a tour of the Acropolis on Nov. 16, 2016, in Athens, Greece.

Security personnel stand guard as President Barack Obama visits the Acropolis on Nov. 16, 2016, in Athens, Greece.

President Barack Obama tours Acropolis Museum with Professor Dimitrios Pandermalis, right, President of the Acropolis Museum, on Nov. 16, 2016, in Athens.

President Barack Obama and Greek President Prokopis Pavlopoulos toast during a State Dinner at the presidential mansion on Nov. 15, 2016.

President Barack Obama poses for a picture with the children choir of the National Opera after the state dinner at the presidential mansion in Athens, Greece, on Nov. 15, 2016.

President Barack Obama, center, Greek President Prokopis Pavlopoulos, right, and Greek Prime Minister Alexis Tsipras stand to the national anthem during the state dinner at the presidential mansion in Athens, Greece, on Nov. 15, 2016.

Greek Prime Minister Alexis Tsipras and U.S. President Barack Obama deliver joint statements to the press after their meeting in Athens, Greece, on Nov. 15, 2016.

President Obama inspects the presidental guards during the official welcoming ceremony outside the presidental palace in Athens on Nov. 15, 2016.

Airport employees roll out the red carpet during the arrival of the Air Force One carrying President Barack Obama at the Athens International Airport in Athens, Greece, on Nov. 15, 2016.