What is America's biggest challenge?

Walt predicts that America will have to do a lot of adjustment in the next 30 or 40 years.

Arlen Specter: The most pressing problems in my judgment are terrorism, the threat of countries like Iran getting nuclear weapons, or North Korea misusing nuclear weapons. The other hotspots around the globe and in the Mid East are the fragile peace between Israel and Hezbollah, the battles between the Palestinians and the Israelis, the threat that Hamaas poses firing shells into Israel, the need for nuclear arms control; pursuit of the negotiations, which are underway between the United States and Russia . . . major economic issues to be resolved, especially with the growing power of China and India.
Recorded on: 7/4/07

Arlen Specter: The most pressing problems in my judgment are terrorism, the threat of countries like Iran getting nuclear weapons, or North Korea misusing nuclear weapons. The other hotspots around the globe and in the Mid East are the fragile peace between Israel and Hezbollah, the battles between the Palestinians and the Israelis, the threat that Hamaas poses firing shells into Israel, the need for nuclear arms control; pursuit of the negotiations, which are underway between the United States and Russia . . . major economic issues to be resolved, especially with the growing power of China and India.
Recorded on: 7/4/07