An enterprising soul is already translating into English Japanese Prime Minister's Tweets on Hato Cafe. See here.
There is also an aggregator of Japanese politicians' tweets, Japanese only, here.
If all that gets too tiring, then jump to the Democratic People's Republic of Korea's News Twitter Feed here. It unfortunately ends in July 2009. We liked this tweet:
Ignorant talk from US about change in DPRK dismissed as ridiculous day-dream!