Apart from a short period in the 1980s, the People's Republic of China has been almost completely excluded from access to military and sensitive dual-use civilian-military technologies from the United States and its allies. But in an era of globalization and convergence in the civilian and military technological domains, this compartmentalization of the economic and security arenas has become increasingly difficult to maintain and justify. Major trading countries are caught in the dilemma of balancing restrictions on high technology and other sensitive trade and investment with China against the benefits of deeper ties with the world's second-largest economy. In examining the trade-offs between economics and national security for the United States, the European Union, Israel, and Japan, it becomes clear that China's rise and growing economic and strategic influence introduce new complexities and challenges for controlling militarily relevant technology and knowledge transfers.