The E wrote:
And yet, here he is, ordering the assassination of an iranian official on iraqi soil. Here he is, surging almost 4000 troops into the theater, all on some nebulous "there's an attack imminent" bullshit that has not been corroborated by anyone credible yet.
Reinforcing Basra region make quite a lot of sense. It is the most vulnerable part of Iraq in therms of overland invasion. Every other part of border is relatively safe - it's mostly desert, with hundreds of miles until anything important - but near Basra and Abadan, Iranian troops need to advance only 20 km to completely cut Iraq from sea, and only 60 km to reach the entrance of Kuwait Bay. From where they could target El-Kuwait with their rockets & long-range artillery.
While such attack is not very probable, it is nerveless POSSIBLE, and in case thing degrade into all-out shooting war with Iran, it make every strategical sense to rush troops into this regions in advance.