Lukashenko has been dubbed "Europe's Last Dictator" for his iron-fisted rule, and the exiled leader of Belarus' opposition warned Trump to be wary of him.

On Tuesday, September 23, the president launched into a rambling address that jumped from climate change to immigration to energy policy, sparking outrage across social media. His sharpest words were aimed at Europe, where he blasted leaders for investing in renewable energy and opening borders to migrants.

President Trump lambasted the United Nations and Europe on Tuesday during a combative return to the U.N. General Assembly.

". Both the immigration and their suicidal energy ideas will be the death of Western Europe if something is not done immediately. They cannot—this cannot be sustained."