Mounting costs, risks, and public misgivings of waging war are raising the importance of U.S. power to coerce (P2C). Meanwhile, globalization of trade, investment, finance, information, and energy give the United States promising coercive options, especially against adversaries that depend on access to such markets and systems.

The Power to Coerce: Countering Adversaries Without Going to War documents the most interesting of U.S. P2C options: financial sanctions, support for nonviolent political opposition to hostile regimes, and offensive cyber operations. Cutting off access to the global interbanking system can visit severe and radiating economic pain and be calibrated according to the target's response. Support for prodemocracy opposition can be very threatening and offer strong leverage, but this option can be high risk and calls for judicious use.

Offensive cyber operations are also a high-return, high-risk option. Skillfully targeted, they can disturb the functioning and confidence of states and markets and thus have coercive value. However, the risks and costs of collateral damage, retaliation, and escalation are considerable, especially if the target country is itself a cyber-war power. Given its own vulnerabilities, the United States might wish to raise, not lower, the threshold for cyber war.

The state against which coercion is most difficult and risky is China, which also happens to pose the strongest challenge to U.S. military options in a vital region. Russia, Iran, and other states less robust than China are more-inviting targets for coercive power.

The United States should hone its ability to monitor financial assets and flows and to isolate recalcitrant states and banks that do business with them. The U.S. State Department and intelligence community should refine their methods to support nonviolent democratic opponents in hostile and repressive states and assess the risks and benefits of using those methods. More generally, the U.S. government should prepare for the use of P2C as it does for military warfare, including assessment of options, requirements and capabilities, conducting war games to refine these capabilities, and planning with allies. Just as authorities, responsibilities, and command chains are delineated for hard power, so should they be for P2C.