Disruptions in the Strait of ?Hormuz ?could push small and medium-sized ?businesses out of global supply chains, increasing economic concentration and weakening ?the resilience of international trade, the United Nations Conference on Trade and Development said on Tuesday. • ?Rising energy bills, freight rates, ?insurance premiums and financing constraints sparked by the U.S-Iran war place heavier burdens on ?small and ?medium-sized enterprises (SMEs) than on large firms, leaving them more vulnerable than ?large corporations that can diversify suppliers, markets and funding sources.