If envy were the cause of terrorism, Beverly Hills [and] Fifth Avenue ... would have become targets long ago.

What we see today is an American economy that has boomed because of policies and developments of the 1950s and '60s: the interstate-highway system, massive funding for science and technology, a public-education system that was the envy of the world and generous immigration policies.

There is no way to turn off this global economy, nor should one try. Every previous expansion of global capitalism has led to greater prosperity across the world.

There is very strong historical data that suggest the way societies grow is by making large, long-term investments.

Street protests in Saudi Arabia might warm our hearts, but they could easily lead to $250 a barrel oil and a global recession.

If there is one lesson for U.S. foreign policy from the past 10 years, it is surely that military intervention can seem simple but is in fact a complex affair with the potential for unintended consequences.

The situation in Syria is quite different from Libya.