Robert Mugabe's ruling Zanu-PF on Sunday 2 July said most Zimbabweans are grateful for its rule and dismissed as insignificant a new opposition political party launched at the weekend. Zanu-PF spokesperson Nathan Shamuyarira shrugged off calls by the leader of the newly launched United People's Party (UPP), Daniel Shumba, on the ruling party to resign because it had failed to run Zimbabwe properly.