Root Cause Analysis (RCA) of Global Wheat Price Volatility: A Study of Influential Factors Amidst the 2022 Russia-Ukraine Conflict - Kumara, Aditya; Octavian, Amarulla; Swastanto, Yoedhi; Laksmono, Rudi (EKOMBIS REVIEW: Jurnal Ilmiah Ekonomi dan Bisnis, 2026)