Trump's Sunday Tweet escalates Tension between U.S. , Iran
Mr Trump's tweet on Sunday which reads "If Iran wants to fight, that will be the official end of Iran," has been a means of escalating tensions between the U.S and Iran.
Trump's Sunday tweet was issued hours after a rocket was fired into the heavily fortified Green Zone in the Iraqi capital, Baghdad, and hit a building about 0.5km (0.3 miles) from the US embassy.
The US recently evacuated non-emergency staff from the mission because of what it perceived to be a "serious" threat reportedly linked to Iran-backed forces in Iraq.
In reply, Iran's Foreign Minister Mohammad Javad Zarif dismissed US President Donald Trump's "genocidal taunts" and warned him not to threaten his country.
Zarif drew Trump to history and said that "Iranians have stood tall for millennia while aggressors all gone... Try respect - it works!"
However, the United States has deployed additional warships and planes to the Gulf in recent days.
Trump's tweet marked a shift in tone after recent attempts by him to downplay the possibility of a military conflict with Iran.