Top five things Americans fear the most.

What do Americans fear most? When it comes to America's international security interests, the North Korean and Iranian nuclear programs are deemed most threatening, according to a new survey from Gallup. Americans were giving a list of nine developments and asked to rank them from more to less critical. Here are the top five threats Americans say are most critical:

1. The nuclear programs of Iran and North Korea (tied for first)

2. International terrorism

3. Islamic fundamentalism

4. The economic power of China

5. The military power of China

The poll was conducted before North Korea's most recent nuclear test.

Other issues that had previously ranked higher -- such as the Israeli-Palestinian conflict and tensions between India-Pakistan -- have declined.

Here's a look at the full list of Gallup's results:

(AP Photo)