FNA- Deputy Chief of Staff of Iran's Armed Forces Brigadier General Massoud Jazzayeri lashed out at US Secretary of State Rex Tillerson for his comments against Tehran's missile program, adding that it showed the American officials' lack of understanding.

His remarks came after Tillerson called on Iranian President Hassan Rouhani to end the country�s ballistic missile tests in�what was Washington�s first reaction to his re-election.

"The US secretary of state's expectations of the Iranian president indicate the US officials' non-understanding of the Islamic Republic of Iran," General Jazzayeri said in response on Sunday.

Stressing that the only way for the establishment of peace and tranquility in the region is the US withdrawal of its forces, he said that Iran is implementing its policies in a specified course of action and nothing can impede or stop it.

General Jazzayeri stressed that Iran will continue and accelerate its defense programs, including development of missile defense systems, as a priority.

In relevant remarks earlier this month, General Jazzayeri said that the US spy agencies cannot understand the extent of Iran's progress in defensive fields.

"We can conclude from the news and information which are presented and released by the US bodies and influential people that the US military and intelligence bodies are not able to understand the depth of Iran's defense capabilities," Jazzayeri said.

He underlined that Iran enjoys an "active deterrence power" which chases any aggressor until annihilation or surrender.

Jazzayeri stressed that given the existence of evil enemies, Iran will continue progress in building different weapons and equipment to defend itself.