Argentina–United States relations

Argentina and the United States have maintained bilateral relations since the United States formally recognized the United Provinces of the Río de la Plata, the predecessor to Argentina, on January 27, 1823.

Relations were severely strained in the era of World War II, when Argentina refused to declare war on Nazi Germany, and became the only Latin American nation not to receive American aid. Relations continued to be difficult when the Perons were in power. Relations were strained in 1982 after the US supported the United Kingdom against Argentina. Since 1998, Argentina has been a major non-NATO ally, partly owing to Argentina's assistance to the United States in the Gulf War (known as Operativo Alfil). Relations have been strained at times over the past few years, especially during the Cristina Fernández de Kirchner administration, but they improved during the presidency of Mauricio Macri (2015 - 2019) and Javier Milei (2023 - present).