improves the ability of the client to learn about the R&D firm s ability and the alliance project s quality. The model …

uniformly selected to initiate an alliance and to invite collaboration partners. These decide about acceptance based on an … individual threshold that is compared with the utility expected from joining the current alliance. The benefit of alliances … cost of an alliance reflects its coordination effort. Two free parameters ac and a1 scale the costs and the individual …

internal fight reduces the alliance's ability to succeed against the outside enemy. Second, the option to make non …-binding declarations on non-aggression in the relationship between alliance members does not make peaceful settlement within the alliance … more likely. Third, higher differences in the alliance players' contributions to alliance effort lead to more internal …

concerning burden sharing and strategic doctrine in the NATO alliance are discussed. Comparisons between the Nash and Lindahl …