Hammer and Sickle flag alongside British Union Jack flag flying in Moscow, Russia

British Union Jack flag alongside American Stars and Stripes flag signifying detente and special relationship, Washington DC, USA

Two men wearing arab headdresses giving the traditional arab greeting in the Hilton Hotel at Al Ain, Abu Dhabi, United Arab Emirates

The Churchill And Roosevelt, Allies Sculpture, on New Bond Street, in Mayfair, London, England, United Kingdom, Europe

Early 12th century reliefs with later additions, in the gallery showing the Thais marching as allies of the Khmer army, Angkor Wat, Angkor, UNESCO World Heritage Site, Cambodia, Indochina, Southeast Asia, Asia

Sir Winston Churchill and President Eisenhower in Mayfair, London, England, United Kingdom, Europe

The Peter Harrison Planetarium designed by Allies and Morrison, part of the Royal Observatory complex, Greenwich, London, England, United Kingdom, Europe

Doctor and nurse shaking hands near railing

Doctor and nurse shaking hands near railing

Business people shaking hands courthouse

Businessmen shaking hands in office meeting

Businessmen shaking hands in restaurant

Wind turbines of the Ally Mercoeur windfarm, Departement Haute-Loire, France, Europe

Germany, Berlin, Checkpoint Charlie, US Army checkpoint and guardhouse reconstruction at the former crossing point between East and West Berlin.

Germany, Berlin, Checkpoint Charlie, Open air exhibition showing map of divided Berlin.