Iran is the most important foreign policy challenge for the president.

The policy challenge is to act in a serious and sensible way, given the limits of our knowledge.

Now it is faced with a whole different kind of foreign policy challenge.

The foreign policy challenges are being played out in real time.

Our fat is one of the most important public policy challenges we face.

The real policy challenge comes now: what are the right remedies?

The council says the trends on work outside the home "present significant policy challenges to private employers and government."

Facing its first major foreign policy challenge, the administration performed well.

Now, he has moved with startling speed on yet another foreign policy challenge.

The foreign policy challenges facing our nation today are immense.