My money's on China. They'd already infiltrated the U.S. 10 years after Anchorage was lost and the Resource Wars ended. I think they hacked enough U.S. infrastructure to ensure a swift first-strike response. For God's sake, they were the entire workforce at Mama Dolce's before the nuke war. God knows what they were putting into all that processed food. Plus Vault-Tec already screwed with everyone's minds with the "Cry Wolf" plan that had been running before the Resource Wars, to which the U.S. population got burned out on emergency drills and ensured their vaults wouldn't get mobbed when the (expletive) hit the fan for real. If you go by FO1 and 2 canon, it was China, but the Enclave were planning on surviving to create their little technotopia of perfect untanted people. Yet if you played Mothership Zeta, you'll find that this is flushed down the crapper and the aliens were causing chaos and panic on both sides until somebody in China panicked and pushed the button.
LMFAO @ that video link. Was that done by Sasha Baron Cohen, sure sounded like his @ss...
whao, lets back up the gravy train..
it is unknown.. you can think it is china.. but pres richardson saying that it was china doesnt prove anything.. he 1) wasnt there 2) is biased 3) The narrator on all fallout games says no know knows. as a narrator, he is an omniscient figure in the game.. if he says no know knew. then no one knew.. MZ only alludes that the aliens were trying to get codes.. not that they did, or if they did that they were used.
the fact that there were Chinese spies all over kinda shows that they didn't launch though.. what would be the purpose of those spies being there (not just at dulces, but in the hidden locations, as well as PL), if they were just going to nuke the US?