A general view shows, presidents, foreign ministers and delegation members attending the 17th Non-Aligned Summit in Porlamar, Venezuela September 17, 2016. REUTERS/Marco Bello

Venezuela's President Nicolas Maduro (C) attends the 17th Non-Aligned Summit in Porlamar, Venezuela September 17, 2016. REUTERS/Marco Bello

Venezuela's President Nicolas Maduro (R) welcomes Ecuador's President Rafael Correa to the 17th Non-Aligned Summit in Porlamar, Venezuela September 17, 2016. REUTERS/Marco Bello

Zimbabwe's President Robert Mugabe (C) walks next to Venezuela's Foreign Minister Delcy Rodriguez (R) as he arrives to the 17th Non-Aligned Summit in Porlamar, Venezuela September 17, 2016. REUTERS/Marco Bello

Venezuela's President Nicolas Maduro (R) welcomes Iranian President Hassan Rouhani to the 17th Non-Aligned Summit in Porlamar, Venezuela September 17, 2016. REUTERS/Marco Bello

Venezuela's President Nicolas Maduro (centre L) shakes hands with Palestinian President Mahmoud Abbas (centre R) as they arrive for a family photo during the 17th Non-Aligned Summit in Porlamar, Venezuela September 17, 2016. REUTERS/Marco Bello

Venezuela's President Nicolas Maduro (bottom C), Iranian President Hassan Rouhani (bottom L), Palestinian President Mahmoud Abbas (bottom R) and other presidents, leaders and head of delegations pose for a family photo during the 17th Non-Aligned Summit in Porlamar, Venezuela September 17, 2016. REUTERS/Marco Bello

Venezuela's President Nicolas Maduro waits during the welcoming ceremony of the 17th Non-Aligned Summit in Porlamar, Venezuela September 17, 2016. REUTERS/Marco Bello