The largest recent transactions, all worth at least $500 million, involving targets or acquirors from each of six Asian jurisdictions or regions: Greater China, Japan, Southeast Asia, India, Australia, and South Korea. All deals were announced between March 15, 2012, and September 1, 2012. Deals that were pending at press time are starred( * ). Research by mergermarket and Rebecca Geiger.

CHINA/HONG KONG/TAIWAN

Target: Nexen Inc. *
Counsel: Blake, Cassels & Graydon; Covington & Burling; Norton Rose; Paul, Weiss, Rifkind, Wharton & Garrison
Counsel for Nexen board: Richard A. Shaw Professional Corporation; Burnet, Duckworth & Palmer
Bidder: China National Offshore Oil Corporation (CNOOC Limited)
Counsel: Davis Polk & Wardwell; Herbert Smith Freehills; Stikeman Elliott
Counsel for financial adviser Citigroup Global Markets Inc.: Cleary Gottlieb Steen & Hamilton
Counsel for financial adviser BMO Nesbitt Burns: Morrison & Foerster
Value: $15.1 billion