President Donald Trump and Colombian President Gustavo Petro defended their views on social media and imposed tariffs on each other’s goods.

President Donald Trump on Sunday announced retaliatory tariffs on Colombia after its president blocked US military deportation flights from landing, the first instance of Trump using economic pressure to force other nations to fall in line with his mass deportation plans since he took office last week.

The U.S. and Colombia pulled back from the brink of a trade war on Sunday after the White House said the South American nation had agreed to accept military aircraft carrying deported migrants.