The United States has a trade deficit with Iraq, Algeria, Libya and Tunisia, according to the US government, prompting the president to send them letters warning of new tariffs.

Tensions between the U.S. and its NATO allies have cooled off since most of the alliance's member states agreed to increase their defense spending from 2 percent of GDP to 5 percent by 2035, which many Trump supporters say is proof that his hard-charging negotiating tactics, even among friends, produces results.