Venezuela is pissed, as usual. That's not the biggest thing. However, when the president of Brazil says, "this climate of unease disturbs me," it's a little more relevant. I don't think it's a good idea to engender unease with any of the BRIC countries if we can avoid it, but I think this is just an over-reaction.
http://news.bbc.co.uk/2/hi/americas/8194497.stm
http://news.bbc.co.uk/2/hi/americas/8194497.stm