Tough i guess we will have to wait for the mythical industrium conflict to arrive (sometimes i even doubt about it, but heck. A team who can make electricity and nuclear reactors in a Java based game, surely can develop guns for the same game.
But imagine... IC2 + ICBM...
It was a peaceful day. In the town of mineosia, the main mineral producer of minecraftia, it would look like a day just as any other. The war with the MC empire seemed to change nothing... Until, on the skies, black dots approach. Trough the day they grow bigger, and a terrified population realizes: MISSILES! The city defense system kicks in, but it is not enough...
Missiles fly from country to country, until there is nothing left. Death is victorious. Only a small population hidden underground, made by civilians from both countries survives. They will rebuild Block. But it will never be the same.