The Joint Comprehensive Plan of Action (JCPOA) was an international agreement signed between Iran and the P5+1 countries (US, UK, France, Germany, Russia, China, EU) signed in 2015, but the US scrapped it in 2018.

Switzerland has based its foreign policy on neutrality; due to the official neutrality of Switzerland in international political issues, the political relations between Iran and Switzerland did not undergo changes in the years after the victory of the Islamic Revolution.