Book excerpt: 'Cassese's International Law' is a new edition of an established classic. The authors have refreshed Cassese's original approach, ensuring the book continues to compare the traditional legal position with the developing and evolving law. Advancing areas such as the law of the sea, territorial matters, and international environmental law have been expanded to give proper place to their evolving development, while brand new chapters on international trade and foreign investment have been written to reflect the advancements of these areas.