Playing latest beta, Axis vs AI, reached so far end June 1941
Tobruk seems too easy to take. The garrison is relatively weak, and allies air and naval forces do not seem to support it enough. The supply depot just south of Tobruk seems to be a key in this part of the map and the Allied AI also does not defend it very well.
Regards
(PS: So far the Allied AI seems also too passive. It just retreats and do not counterattack. My only enemy is the (lack of) supply

I will keep playing to see if any counterattack will be coming. )