Trump "uses a worthless photo to recklessly accuse Iran", Foreign Minister Mohammad Javad Zarif said on Twitter, referring to an image Trump had posted following a rocket attack on the US Embassy in the Iraqi capital Baghdad on Sunday.
"Trump will bear full responsibility for any adventurism on his way out," Zarif added, according to AFP.
Zarif's comments came after Trump accused Iran of being behind the rocket attack that caused material damage but no deaths.
Trump tweeted on Wednesday the rockets that landed in Baghdad’s heavily fortified Green Zone were from Iran and “we hear chatter of additional attacks against Americans in Iraq”.
The Iraqi military blamed the rocket strike on an “outlaw group”.
The US president, now in his final weeks in office, is sticking to his "maximum pressure" approach toward Iran.
“If one American is killed, I will hold Iran responsible. Think it over," Trump said.
Zarif responded earlier Thursday, tweeting, "Putting your own citizens at risk abroad won't divert attention from catastrophic failures at home."
“Last time, the US ruined our region over WMD (weapons of mass destruction) fabrications, wasting $7 TRILLION & causing 58,976 American casualties” Zarif said in a reference to the 2003 US-led invasion of Iraq.
In another tweet, Zarif posted a picture of Trump’s tweets between 2011 and 2013, in which he had alleged that then president Barack Obama was after waging a war on Iran prior to the election, Press TV reported.
“Putting your own citizens at risk abroad won’t divert attention from catastrophic failures at home,” Zarif wrote, in reference to another photo he attached to his tweet, which listed the highest daily death rates due to a single catastrophe in the last 100 years in the United States, including the one caused by the coronavirus pandemic that has even topped the 9/11 attacks.
Trump’s anti-Iran allegation followed a similar one by US Secretary of State Mike Pompeo, in which he blamed Iran for the rocket strike.
Also on Thursday, Iranian Foreign Ministry spokesman Saeed Khatibzadeh advised Trump to avoid any tension and “dangerous adventurism” in his final days in office, saying the Islamic Republic holds the US government responsible for the consequences of any “unwise action.”
“As we have repeatedly said, attacks on diplomatic and residential buildings are rejected, and in this particular case, the finger of blame is being pointed at the United States itself and its partners and allies in the region, who are seeking to increase tensions and create new seditions,” he added.
Top US national security officials agreed on Wednesday on a proposed range of options to present to Trump meant to deter any attack on US military or diplomatic personnel in Iraq, a senior administration official told Reuters, without describing the content of the options or say whether they included military action.
The exchange comes as tensions mount ahead of the first anniversary of the assassination of top Iranian Lieutenant General Qassem Soleimani in a US drone strike in Baghdad.
Trump ordered a drone strike on January 3 this year to target general Soleimani while he was in Baghdad.
Days later, Iran launched a volley of missiles at US forces based in Iraq.