[6] From March 31 to April 1, 2016, a conference of defense ministers from the CEDC member states as well as those from Poland, Serbia, North Macedonia and Montenegro took place in Vienna.

[7] A joint initiative was taken to secure the external border, a continued closure of the Balkan route and the implementation of settlement measures of migrants who had arrived previously.

On 19 June 2017 the six countries pledged in Prague closer cooperation on tackling illegal migration including the use of armed forces.

[8] Countries are working on the joint action plan, which will distribute tasks between member's armies, police forces and other organisations when common response is needed.

[9] In September 2017 the group organized a joint military exercise Cooperative Security 2017 (COOPSEC17) in Allentsteig, Austria focused on fortifying borders against mass migration.