Alpha Protocol - Preview @ VideoGamer

Obsidian's Nathan Davis has demoed Alpha Protocol to VideoGamer, resulting in this preview:

You'll be able to direct the conversation as you wish, sucking up to the guard or acting like a jerk. If you think the conversation is turning sour you can even draw your gun and take the marine out mid sentence. But Nathan's being patient and, after some initial stone walling, manages to talk his way in. "Each one of these choices has the possibility of affecting things in the short term and the game as a whole," says Nathan. It will be how these kinds of decisions impact the overall story and player experience that will set Alpha Protocol apart from other RPGs.