Prime Minister Syed Yusuf Raza Gilani will represent Pakistan at the second Pakistan-EU Summit at Brussels to be held on April 21. Pakistan attaches considerable importance to further deepening and broadening its close cooperative relations with the European Union and its member states, says a press release issued by Foreign Office. Since the holding of the first Summit in Brussels last year (17 June), Pakistan-EU relations have witnessed significant momentum towards forging of a robust strategic cooperative partnership. The 27 member states European Union is Pakistan's largest trading, investment and development assistance partner.