I believe his reasoning goes something like:
* I need land, and have a strong military .
* Lewwyn has land, and his military is weak.
* I should take Lewwyn's land.
The only Malian land he's scouted happens to be Lew's handful of not terrible cities, so OH will be in for a surprise when he finds that most of it is borderline worthless pre-Bio... followed by an even bigger surprise when Krill, Cairo, and Superdeath all declare on him. OH is kind of screwed
* I need land, and have a strong military .
* Lewwyn has land, and his military is weak.
* I should take Lewwyn's land.
The only Malian land he's scouted happens to be Lew's handful of not terrible cities, so OH will be in for a surprise when he finds that most of it is borderline worthless pre-Bio... followed by an even bigger surprise when Krill, Cairo, and Superdeath all declare on him. OH is kind of screwed
