WASHINGTON, June 20 (TNSrep) -- The Center for Strategic and International Studies issued the following brief on April 6, 2023, entitled "A World of Blocs." The brief was written by Aaron L. Friedberg. Here are excerpts: * * * THE ISSUE EDITORS' NOTE Edited by Jude Blanchette of CSIS and Hal Brands of SAIS, the Marshall Papers is a series of essays that probes and challenges the assessments underpinning the U.S. approach to great power rivalry. The Papers will be rigorous yet provocative,   more