No National Treasure 3 soon

From a Nicolas Cage interview on January 27, 2012:

Olishuter says: I loved the National Treasure films – is there any news of doing a National Treasure 3, if so, would you like to do another one and where?
Cage: I would, but I have not heard any news about a third one at this time, and it would be interesting to take National Treasure into South America.

[link to interview]