The study of coalition formation under uncertainty poses subtle questions regarding the appropriate definition of the core. In this paper a new core concept, the interim sequential core (ISC), is proposed as a solution concept to transferable utility games with uncertainty when binding...

The weak sequential core is a solution concept to coalition formation under uncertainty when only non-binding agreements can be formed ex ante. Here the case where any deviation from an allocation must be robust to communication both within, and between, coalitions at the ex ante stage is...