While some have shared Trump's tweets, many in Iran distrust him as he's refused to re-certify the nuclear deal and because his travel bans have blocked Iranians from getting USA visas. "No more!" Trump said in his first tweet of the year.
As for Iran, Trump said it's time for a change.
Meanwhile, Pakistan Foreign Minister Khawaja Muhammad Asif said he would respond to the US President's tweet shortly after the latter blamed the country for providing safe havens to terrorists.
Hamdullah Mohib, Afghanistan's ambassador in Washington, said in a Twitter posting that Trump's tweet was a "promising message to Afghans who have suffered at the hands of terrorists based in Pakistan for far too long".
However, the New York Times reported Friday that Pakistan had refused to allow us access to a militant captured in October during the rescue operation for American hostage Caitlan Coleman and her family.
The "Iranian people give no credit to the deceitful and opportunist remarks of USA officials or Mr. Trump", said Iran's Foreign Ministry spokesman, Bahram Ghasemi, according to state television.
The administration first said in August it was temporarily withholding the $255 million, which was part of a $1.1 billion aid package authorized in 2016 by Congress.
Trump said Sunday that the stock market will continue to rise and that companies are going to continue to come into the USA, at "a rapid clip".
"We are paying [a] heavy price in the war against terrorism and lost many lives of armed forces, law enforcement agencies and general public as well", she wrote. He also expressed a desire to see India - Pakistan's arch rival - become a closer partner.
The latest move comes after the USA has been denied access to a member of the Taliban-linked Haqqani network who is in Pakistan's custody.
In 2011, Pakistan was not advised as the USA conducted a covert operation that killed Osama bin Laden in the military garrison town of Abbottabad, about 118 kilometres from the capital of Islamabad.
According to the Express Tribune, Pakistan's foreign office on Monday summoned the US envoy to lodge its protest against the tweet.