![Soldiers escort the casket of former UN Secretary-General Kofi Annan during Annan\'s state funeral in Accra, Ghana, on Sept. 13, 2018. A number of African and world leaders joined Ghanaian President Nana Akufo-Addo here on Thursday to bid farewell to former United Nations Secretary-General Kofi Annan, who passed away in Switzerland on Aug. 18. (Xinhua/Fred Bonsu)](http://www.ecns.cn/hd/2018/09/14/7a53d4f7a80e4fd4a40e851fbb989a70.jpg)
Soldiers escort the casket of former UN Secretary-General Kofi Annan during Annan's state funeral in Accra, Ghana, on Sept. 13, 2018. A number of African and world leaders joined Ghanaian President Nana Akufo-Addo here on Thursday to bid farewell to former United Nations Secretary-General Kofi Annan, who passed away in Switzerland on Aug. 18. (Xinhua/Fred Bonsu)
![Ghanaian President Nana Akufo-Addo (2nd L) lays a wreath for former UN Secretary-General Kofi Annan during Annan\'s state funeral in Accra, Ghana, on Sept. 13, 2018. A number of African and world leaders joined Ghanaian President Nana Akufo-Addo here on Thursday to bid farewell to former United Nations Secretary-General Kofi Annan, who passed away in Switzerland on Aug. 18. (Xinhua/Fred Bonsu)](http://www.ecns.cn/hd/2018/09/14/5554c5e8dfe74bc8aec4b444f11c87f4.jpg)
Ghanaian President Nana Akufo-Addo (2nd L) lays a wreath for former UN Secretary-General Kofi Annan during Annan's state funeral in Accra, Ghana, on Sept. 13, 2018. A number of African and world leaders joined Ghanaian President Nana Akufo-Addo here on Thursday to bid farewell to former United Nations Secretary-General Kofi Annan, who passed away in Switzerland on Aug. 18. (Xinhua/Fred Bonsu)
![United Nations Secretary-General Antonio Guterres (1st L) lays a wreath for his late colleague Kofi Annan during Annan\'s state funeral in Accra, Ghana, on Sept. 13, 2018. A number of African and world leaders joined Ghanaian President Nana Akufo-Addo here on Thursday to bid farewell to former United Nations Secretary-General Kofi Annan, who passed away in Switzerland on Aug. 18. (Xinhua/Fred Bonsu)](http://www.ecns.cn/hd/2018/09/14/44c3c499432c482099b5e84e1972b63b.jpg)
United Nations Secretary-General Antonio Guterres (1st L) lays a wreath for his late colleague Kofi Annan during Annan's state funeral in Accra, Ghana, on Sept. 13, 2018. A number of African and world leaders joined Ghanaian President Nana Akufo-Addo here on Thursday to bid farewell to former United Nations Secretary-General Kofi Annan, who passed away in Switzerland on Aug. 18. (Xinhua/Fred Bonsu)
![Ghanaian President Nana Akufo-Addo (4th L, front) and United Nations Secretary-General Antonio Guterres (3rd L, front) attend the state funeral of former UN Secretary-General Kofi Annan in Accra, Ghana, on Sept. 13, 2018. A number of African and world leaders joined Ghanaian President Nana Akufo-Addo here on Thursday to bid farewell to former United Nations Secretary-General Kofi Annan, who passed away in Switzerland on Aug. 18. (Xinhua/Fred Bonsu)](http://www.ecns.cn/hd/2018/09/14/46d2a9072dc647828fe8d3e7df024eee.jpg)
Ghanaian President Nana Akufo-Addo (4th L, front) and United Nations Secretary-General Antonio Guterres (3rd L, front) attend the state funeral of former UN Secretary-General Kofi Annan in Accra, Ghana, on Sept. 13, 2018. A number of African and world leaders joined Ghanaian President Nana Akufo-Addo here on Thursday to bid farewell to former United Nations Secretary-General Kofi Annan, who passed away in Switzerland on Aug. 18. (Xinhua/Fred Bonsu)
![Nane Annan (2nd R, front), widow of former United Nations Secretary-General Kofi Annan, lays a wreath during Annan\'s state funeral in Accra, Ghana, on Sept. 13, 2018. A number of African and world leaders joined Ghanaian President Nana Akufo-Addo here on Thursday to bid farewell to former United Nations Secretary-General Kofi Annan, who passed away in Switzerland on Aug. 18. (Xinhua/Fred Bonsu)](http://www.ecns.cn/hd/2018/09/14/0089defce4ec47ac80ad1d33e195d954.jpg)
Nane Annan (2nd R, front), widow of former United Nations Secretary-General Kofi Annan, lays a wreath during Annan's state funeral in Accra, Ghana, on Sept. 13, 2018. A number of African and world leaders joined Ghanaian President Nana Akufo-Addo here on Thursday to bid farewell to former United Nations Secretary-General Kofi Annan, who passed away in Switzerland on Aug. 18. (Xinhua/Fred Bonsu)