GENEVA The World Trade Organization's Agreement on Fisheries Subsidies entered into force on Monday, marking the first multilateral trade pact focused on environmental sustainability. The deal prohibits subsidies that fuel illegal, unreported, and unregulated fishing or that target overfished stocks and unregulated high seas. The WTO said in a statement that the agreement commits members to curbing billions of dollars in harmful subsidies that contribute to the depletion of marine resources. "