U.S. President Donald Trump and South Korean President Moon Jae-in shake hands during a meeting in the Oval Office of the White House in Washington, D.C., on May 22nd, 2018.

Martina Hoffinger of Arte Aurelia gilding company restores letters on the Soviet Memorial at Schwarzenberg square, in Vienna, Austria, on April 11th, 2018.

Remains of the former border wall stand at the Berlin Wall Memorial at Bernauer Strasse on February 5th, 2018, in Berlin, Germany.

Spectators stand before a fireworks display over the Taedong River during celebrations marking the anniversary of the birth of late North Korean leader Kim Il Sung in Pyongyang, North Korea, on April 15th, 2018.