© HO / Iranian Defence Ministry / AFPLaunch of an Imad missile, Iran.
The latest exercise took place in Semnan Province on Saturday, covering 35,000 square kilometers, and the Revolutionary Guards website said the drills took place to "showcase the power of Iran's revolution and to dismiss the sanctions."
The drills are aimed at testing home-made missile systems, radars, command and control centers, and cyber-warfare systems, Iranian state news agencies reported, as cited by Reuters.
If Iran's security is threatened, Tehran will not hesitate to retaliate, the military added in separate remarks.
"We are working day and night to protect Iran's security. If we see [the] smallest misstep from the enemies, our roaring missiles will fall on their heads," the head of the Revolutionary Guards' aerospace unit, Brigadier General Amir Ali Hajizadeh, was quoted as saying by Tasnim news agency.
On Friday, the US imposed fresh sanctions related to Iran's missile program, blacklisting 13 individuals and 12 businesses.
Earlier the same day, the world witnessed a full-out Twitter war: US President Donald Trump tweeted that "Iran is playing with fire," and that he would not be as kind as Obama.
In response, Iranian Foreign Minister Javad Zarif tweeted that Iran is "unmoved" by the warnings, and added: "We'll never initiate war, but we can only rely on our own means of defense." In another tweet, Zarif said Iran "will never use weapons against anyone, except in self-defense. Let us see if any of those who complain can make the same statement."
US Defense Secretary James Mattis then branded Iran as "the single biggest state sponsor of terrorism in the world."
Comment: Come on now... When there's Saudi Arabia just across the water!?
"It does no good to ignore it. It does no good to dismiss it and at the same time I don't see any need to increase the number of forces we have in the Middle East at this time," the Pentagon chief said at a press conference in Tokyo on Saturday.
"We always have the capability to do so but right now I don't think it's necessary," he added.
On Monday, Fox News quoted US officials as saying that Iran had carried out medium-range ballistic missile tests, and Iran confirmed it.
A historic agreement between the US and Iran stated that Tehran would curb its nuclear potential significantly, but not entirely, reducing the number of its centrifuges by two-thirds.
The deal also obliged Iran to cut its uranium enrichment program below the level necessary for bomb-grade material, with the country's authorities agreeing to reduce its enriched uranium stockpile from around 10,000kg to 300kg for 15 years.
In exchange, the US lifted long-standing sanctions against Tehran.
Comment: Despite Trump's overtures towards Russia, it currently looks like we're back to the same idiotic Iran (and China) bashing again. There is a lot of shouting and posturing going on, but in this new multi-polar world it will likely come to nothing. Iran is no turkey shoot like Iraq and Libya were.