War is role-played out on the official NationStates forums. Those forums are veeeery slow, and seem to be down a lot (the site uses 7GB of traffic per day). It's also kind of non-newbie friendly, from what I could see.
The Free Land of Much Beer and Candy</h2>
<p align="center" style="font-family: Arial; font-size:12pt; font-weight: bold;">"Im AN BesteEst Nayshun!!!!111"</p>
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<td colspan="3" align="center"><strong>UN Category:</strong> Corporate Bordello</td>
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<td width="33%" align="center"><strong>Civil Rights:</strong> Very Good</td>
<td width="33%" align="center"><strong>Economy:</strong> Thriving</td>
<td width="33%" align="center"><strong>Political Freedoms:</strong> Excellent</td>
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</table>
<h4>Location: The West Pacific</h4>