At Sunday press conference, Mousavi paid tribute to late commander of the IRGC Quds Force Major General Qassem Soleimani and stressed that General Soleimani was a hero in fighting against terrorism, cruelty, and extremism.

He emphasized that foreign ministry will keep working in collaboration with the Islamic Revolution Guards Corps (IRGC) Quds Force and its new commander Brigadier General Esmaeil Qa’ani.

“Iran and its Foreign Ministry don’t accept negotiation under the shadow of threat,” Mousavi said.

Answering a question about US’ message to Iran through Swiss embassy in Tehran, the spokesman said, “The message was a letter from US Secretary of State that was non-diplomatic and impolite. We reviewed the letter and answered it in words that fit US officials but it was lower than their expectations”.

The official also denied reports that an Omani delegation has come to Iran for mediation.