It's been known that Iran has had a missile with a range capable of reaching Israel, said Mark Fitzpatrick, executive director of the Institute for Internal Strategic Studies-Americas, a think tank.
"As long as some (of the powers) talk in a threatening language, Iran's strengthening of its defense power will continue", Hatami said.
Johnson made the comments on his Twitter account, after Press TV reported that Iran had successfully test-fired a new ballistic missile.
Washington has imposed unilateral sanctions against Iran, saying Tehran's ballistic missile tests violated a United Nations resolution that endorsed the nuclear deal and called on Tehran not to undertake activities related to ballistic missiles capable of delivering nuclear weapons.More news: Emmanuel Macron: French media are 'totally narcissistic'
Israel's Defence Minister Avigdor Lieberman on Saturday denounced Iran's testing of a medium-range missile as a "provocation" and said it was proof of Tehran's ambition to become a world power.
"Rouhani is playing hardball", said Sanam Vakil, an Iran scholar at Chatham House, a think tank in London, and at the Paul H. Nitze School of Advanced International Studies at Johns Hopkins University.
In the aftermath of a major military parade organized in its capital city of Iran announced on Saturday, via its State-run television, having shot "with success" its new ballistic missile Khoramshahr.
Iran has said all of its missiles are created to carry conventional warheads only and has limited their range to a maximum of 2,000km, although commanders have said they have the technology to go further.
The new missile can be equipped with multiple warheads, not only one, Tasnim news agency reports. State broadcaster IRIB quoted an Iranian commander who stated that the country would not seek "permission" for future weapons tests.More news: Russian military refutes rumors of journalists hit at Zapad-2017 exercise
The Trump administration has called the omission of ballistic missiles a central flaw of the agreement, which Trump may try to revisit - or scrap altogether, as he has threatened in the past.
Previous Iranian missile launches have triggered U.S. sanctions and accusations that they violate the spirit of the 2015 nuclear deal between Tehran and major powers.
The Iranian president also reaffirmed his country's commitment to the nuclear deal.
Russian Foreign Minister Sergei Lavrov said on Thursday that the US imposition of unilateral sanctions on Iran was 'illegitimate and undermines the collective nature of worldwide efforts'.More news: Julia Louis-Dreyfus Makes Emmys History for Veep Win