Hello. You did not indicate Clinton's speech to which this question refers, so the answer was given considering several speeches he proclaimed.
Clinton was a great speaker and he liked his audience to understand the subject he was discussing about so that afterwards he could show arguments that persuaded the audience. In this case, to motivate people he started his speeches explaining the problems of a national order and how these problems affected the population. After explaining these problems, he changed his speech to a more emotional tone and tried to show how strong and fearless the Americans were, being fully capable of fighting and overcoming these problems.
This can be seen in the following statements by Clinton:
"There is no longer a clear division between what is foreign and what is domestic—the world economy, the world environment, the world AIDS crisis, the world arms race, they affect us all [...] Now, we must do the work the season demands".