Possible plot hole?
SPOILERS AHEAD!!
So, we have USA and ASA, with Texas as independant, and Hawkins is trying to help USA to convince Texas that ASAs government was hiding that they know or even organized the bombings, with the help of the sole remaining warhead...
BUT, isn't there a warhead that the USA captured which was intended for New York, so they must still have it, why would anyone need the Hawkins's bomb to prove that it's not Korean but Russian from the custody of USA!?
It's been pointed out a couple of times that this is the only way to convince Texas, and when he lost it he tried very hard to get it back, when actualy all they had to do was to tell the USA to show the data of their bomb to Texas, and that's it!?