The municipal authorities are open to cooperation with foreign partners, not only as regards economic contacts, but also cultural and sports exchange as well as joint ventures in various fields.
A good example of good neighborly relations is a longtime cooperation with the German city of Weißwasser, as well as incorporation of Żary to the Spree-Nysa-Bóbr Euroregion – a voluntary association of townships on both sides of the border.
In 2004 the cooperation with the French city of Longuyon was sealed by a partnership agreement. The city also develops relations with the borderland towns of Forst and Sprembreg. In 2003 the 1st Level State Music School of Żary signed a cooperation agreement with a conservatory from Magdeburg. These are the only music schools named after composer G.P. Telemann.