Nyora kupfuurira kweiyi ndima - Munguva ye21st Musangano weMapato
(COP21) muParis, Idriss Déby akasimudza nyaya yeLake Chad, ine nzvimbo yaiva chidimbu chiduku chezvainge zvave muna 1973, uye yakadana sangano renyika dzakawanda kuti ripe mari yekudzivirira ecosystem.