HARARE, May 20, 2020 (Xinhua) -- Mozambican President Filipe Nyusi, Zambian President Edgar Lungu, Zimbabwean President Emmerson Mnangagwa and Botswana President Mokgweetsi Masisi (L-R) attend the Extraordinary Summit of the Southern African Development Community (SADC) Organ Troika on Politics, Defense and Security Cooperation Plus Mozambique in Harare, Zimbabwe, May 19, 2020. Mnangagwa, who is also the SADC Organ on Politics, Defense and Security, on Tuesday called for joint action among member states of the regional bloc to decisively deal with the growing threat of terrorism. He said this while opening a meeting of the SADC Organ Troika to discuss the deteriorating security situation in parts of Mozambique hit by an Islamic insurgency.