A seven-year-old girl who made headlines for her depiction of the siege of Aleppo on Twitter has issued an open letter asking Donald Trump to "save the children and people of Syria."

The girl, along with her mother Fatemah, were among the thousands of people evacuated by buses and ambulances out of besieged eastern Aleppo as part of the ceasefire deal reached late last week to clear the city and hand it over to government control.

The Twitter account of Bana al-Abed, the 7-year-old girl living in besieged Aleppo, Syria, is back online after disappearing Sunday following an alarming tweet.