In coalitional games with side payments, the core predicts which coalitions form and how benefits are shared. The predictions however run into difficulties if the core is empty or if some coalitions benefit from not blocking truthfully. These difficulties are analyzed in games in which an a...

Technology has been playing a central role in defense spending or arms-producing countries since World War II. Although there has been no major threat or conflict since the 1990s, defense R&D absorbs a large share of military expenditures, as well as public R&D. This technology-centric paradigm...