Evolving efficiency and robustness of the international oil trade network

As a vital strategic resource, oil has an essential influence on the world economy, diplomacy and military development. Using trade data to dynamically monitor warn about international risks is urgent need. Based UN Comtrade from 1988 2017, we construct unweighted weighted global networks (OTNs). Complex network theories have some advantages in analyzing as system with numerous economies complicated relationships. This paper establishes trading-based model for study evolving efficiency, criticality robustness of relationships between partners. The results show that OTNs, efficiency flows gradually increases growing complexity indicators are more capable highlighting impact major events OTNs. identified critical important significance real market. simulated deliberate attacks corresponding national bankruptcy, blockade, economic sanctions significant than random attacks. When promoting high-quality development, continuously enhancing positions OTN, attention needs be paid To conclude, suggestions application given according results.