Explanation: The Agreement on Subsidies and Countervailing Measures (Subsidies Agreement) of the World Trade Organization (WTO) provides rules for the use of government subsidies and for the application of remedies to address subsidized trade that has harmful commercial effects.  

These remedies can be pursued through the WTO’s dispute settlement procedures, or through a countervailing duty (CVD) investigation which can be undertaken unilaterally by any WTO member government. 

Source: https://www.trade.gov/trade-guide-wto-subsidies