This post is just absurd:
1) Assumes that DL and NW will merge
2) Assumes that CO and UA will merge (what will US have to say about that?)
3) Assumes that Uninental will leave Skyteam (*A already have US and AC in North America, so there will definitely be some bargaining before a decision's made)
4) Assumes that ST will see no expansion in Latin America and the Southern US (which is eventually bound to happen, since LAN remains the only S. American airline that belongs to an alliance).
And goes on to criticise AF for something that it has limited control over.
My guess is that, even if the DL/NW merger goes ahead (which is far from certain), CO will not necessarily want to merge with anyone.
If they do, you can be certain that Deltawest will strengthen its operations in SE US. In any event, the States are covered quite well. From a global perspective, the addition of KQ and China Southern is a lot more important than the loss of one of three US members (which at this point remains nothing more than wild speculation).