Iran will strengthen its missile capabilities and will not seek permission from any country to do so, Iranian President Hassan Rouhani said on Friday in an address to a parade of armed forces in the capital Tehran.
"We will promote our defensive and military power as much as we deem necessary", Rouhani said. "Whether you like it or not we are going to help Syria, Yemen and Palestine, and we will strengthen our missiles".
In February, Iran test-fired the same medium-range type of missile, prompting Trump to say that the United States is "putting Iran on notice".
During the general Assembly of the united nations in NY, the us president, Donald Trump has denounced the nuclear deal reached with Iran, as well as its ballistic program.
He added: "Iran's military power lies in its commitment to never invade another country or land". 22 hold the parade on the occasion of "the sacred defense week", marking the beginning of 1980s war with Iraq.
Though Iran has long boasted of having missiles in the same range in its arsenal, it was the first time that the Khoramshahr, with a range of 1,250 miles, had been displayed in public.
Iran has developed in recent years a large ballistic program that worries the United States but also saudi Arabia, its main rival in the region, european countries, including France, as well as Israel, its sworn enemy.
French President Emmanuel Macron on Tuesday said that although the 2015 Iran deal was not flawless, the worldwide community should stick with it or risk facing another situation like North Korea.
In his speech at the United Nations, Mr Trump accused Iran of supporting terrorists and called Tehran a "corrupt dictatorship" and a "murderous regime".
Speaking a day later, Rouhani said the Iranian people are waiting for an apology from Trump for his "extremely offensive" rhetoric and "unfounded" allegations about Iran.
Mr. Trump's secretary of state, Rex W. Tillerson, has said that the Iran nuclear agreement must be changed or the United States would not stick with it. Iran has said the accord is not up for renegotiation.
What's new, he said, is that Iran says its ballistic missiles can carry multiple warheads and maybe several cluster bombs.