Grenadiers from a unit of the German armed forces at he military training area in Munster | Patrick Stollarz/AFP via Getty Imags New EU defense pact: Who’s doing what The roles and projects at the heart of the military cooperation program.

EU leaders are so proud of their new defense cooperation pact that they can't stop celebrating it.

The pact, known as Permanent Structured Cooperation (PESCO), has already been feted at several launches, but it received the official blessing of heads of state and government at their summit in Brussels on Thursday.

Critics see the initiative as a paper tiger. But European Council President Donald Tusk hailed it as a big moment in the history of the EU.

Tusk said that PESCO is the successor of a more than 50-year-old vision for European security cooperation. "The dream was at odds with reality. Today the dream becomes reality."

He added that the the program was "good news for our allies and bad news for our enemies."

PESCO is significant not just because it marks a push by the EU into the military sphere but also because it represents "multispeed Europe" in action. Twenty-five of the EU's current 28 members have signed up — Malta, Denmark and soon-to-depart Britain are the outsiders. But different groups of countries take part in different projects.

The graphic below, based on a Council document obtained by POLITICO, shows the roles to be undertaken by countries in the 17 different projects announced so far. It also shows which countries are taking part in five of the most high-profile projects.