North Korean Supreme Leader Kim Jong Un should know that the US has a history of “quitting treaties and violating their commitments” before trusting Washington, Iran’s Foreign Ministry said Monday.

Just hours before US President Donald Trump is to meet North Korea's supreme leader, the Iranian Foreign Ministry warned that before any deals are made, Kim should be aware that Washington is known for breaking agreements.

A spokesman for Iran's Foreign Ministry said during a weekly briefing with reporters Monday that Iran views the Trump-Kim summit with "great pessimism," the Times of Israel reports.

Emphasizing Tehran's distrust, Iranian Foreign Minister Javad Zarif referred to Trump as the "habitual Deal-Breaker-in-Chief" in a tweet on Monday without explicitly mentioning any names.

While the G7 were busy fighting among themselves in Quebec—and unsuccessfully trying to appease the habitual Deal-Breaker-in-Chief—the #SCO Summit in Qingdao illustrated something altogether different: respectful cooperation among nations committed to multilateralism

​On the morning of June 12, Trump and Kim are slated to meet in Singapore. Both leaders are already present in the southeast Asian city-state, and the Singaporean foreign minister was seen taking selfies with the leader of frequently isolated North Korea.