The development of international law, particularly those dealing with issues of use of force, has been confronted by numerous theoretical as well as practical problems. In addition, the SC''s reactions to such problems and states practices and the emerging concerns for human rights and humanitarian affairs have added perplexity to the already existing challenge on the. This book, among other things, reflects on: how should the conceptual flaws and gaps under the Charter be remedied? Can the Charter system with its strict provisions on the use of force withstand the prevailing pressures from unseen and unconventional actors and enlarged demands of the international community? Generally, the author tries to unknot the bewilderments thereof and pinpoints that international law should not be theorized and it should be able to respond to the prevalent dynamic and multifaceted challenges to the global system by combining ‘normative closure and cognitive openness''. This book will be useful for those working or practicing on international law in the areas of use of force and peace and security affairs, and international law students and even for policy makers.