The US policy of maximum pressure on Iran has turned into a maximum failure, Iranian Foreign Ministry spokesman Saeed Khatibzadeh stated on Thursday.

“The outgoing [US] Sec. [of State Mike] Pompeo's frustration is understandable. His ‘max pressure policy reached a max failure,’" Khatibzadeh wrote on Twitter.

Secretary of State Mike Pompeo announced Wednesday that the US government, led by President Donald Trump, plans to further tighten its sanctions on Iran.