Simple CSS question!

Alright, I’ve got a question. Here’s my HTML code, now I want the “latest” class to be bulleted. What should my CSS look like?

<div class="right_sidebar_col">
<ul>
<li> <h2>Header</h2>
<ul class="latest">
<li><a href="#">Baseball fever in the air</a></li>
</ul>
</li>
</ul>
</div>

I tried the following, but it didn’t work.

.latest ul li{
list-style-type: circle;
}