In 1972, Claussen began scientific cooperation with scientists and institutions around the world.

In 1932 she published more works and began cooperation with Gazeta Polska.

Israel and China began extensive military cooperation as early as the 1980s, even though no formal diplomatic relations existed.

After having entered the government the party began cooperation with the Czechoslovak agrarians.

Singapore and the Holy See began cooperation in 1996 on a pilot project to provide English language training to third countries.

Turkey has already begun military cooperation with China.

Based on this point the nuclear fuel exchange is a starting point to begin cooperation and a positive constructive move forward among nations.

This applied to all civil servants, including the entire Danish police force, which began cooperation with its German counterparts.

Japan would do better to begin economic cooperation now.

Have they been involved in partnership over many years or are they only just beginning cross-border cooperation?