Come now! It is clear that the sarcasm indicator wasn't suggesting that the government didn't really announce that. The sarcasm was in the invocation of governmental authority, which is thereby implied to be ill-founded and not worth listening to.
I felt it useful to provide a reliable source for such an outrageous national position. Lest some think it exaggeration or twisting of facts for humour or effect. It's not. Yikes. :-)