Realist international relations theorists usually would predict that the basic pressures of the international system will force the United States and China into conflict. But properly understood, realism offers grounds for optimism in this case, so long as Washington can avoid exaggerating the risks posed by China's growing power.

The current debate over quantitative easing overlooks the important question of domestic economic strategy in both the developed and developing world. Put simply, consumers in industrial economies buy too much, and those in developing ones, too little.

Al Qaeda is stronger today than when it carried out the 9/11 attacks. Accounts that contend that it is on the decline treat the central al Qaeda organization separately from its subsidiaries and overlook its success in expanding its power and influence through them.