Every single mock draft I have seen has the Cowboys taking an OL in the first. Pretty much all the "inside info" also has Dallas taking OL or trading down to get Brooks + OL. It seems every other year we use a first round pick on an OL. OL in the first and Brooks in the second also seems like a very plausible situation which means it is highly likely we don't even look to draft a defensive player until round 3.
We did absolutely nothing to address our terrible DT and LB groups. Are there no players that would be worth drafting at these positions at the end of the first round? I don't understand why no one at all is talking defense in the first (or even second) round.