A trade war between two neighboring countries has escalated sharply. Retaliatory tariffs have been imposed on American goods worth about $20 billion. The targeted goods include steel, dairy products, appliances, and farm equipment.

This move is a response to earlier actions by the United States. The trade war involves the imposition of tariffs by both sides.

Further details on this escalating trade dispute are available from the source, including the specific measures taken and their potential impact on trade between the two countries.