Simon Coveney, Ireland's agriculture minister, called for the informalsession in Brussels, Belgium, inviting the EU Health Commissioner Tonio Borg and ministers from other European Union nations.
Ministers and officials will be coming to Brussels fresh from an informal two-day session at UN climate convention headquarters in Bonn, where they've heard United Nations Environment Programme chief scientist Joseph Alcamo outline a few key issues.
The manual includes session plans, teaching materials, assistance in teaching techniques and other resources to run informal training in media and journalism.
Ahead of a working session on the eurozone and the world economy, Mr Cameron and Barack Obama took to treadmills for informal talks in the gym at the presidential retreat.