E.U restrictions on Mugabe? What are they and how are they helping?

I'm trying to write a speech for a debate. I'm on the opposition and we're saying the E.U is not failing Africa. I've been giving the topic of different boycotts and embargo's that are non-monetarily helping Africa. Mugabe was suggested to me by one of my researchers but I'm not really sure as to what restrictions are on him and how these restrictions are helping Zimbabwe. As much detail as possible or even links to info would be majorly appreciated. Thanks in advance.