This is the heartwarming moment a man was reunited with his brother after two decades apart.

Ricardo Romero, 69, was left speechless when his older brother, Diego Romero, 72, appeared before him, ending 20 years of separation.

The siblings, who had been living in different cities, initially drifted apart due to personal "differences."

Originally, Ricardo had planned to visit Diego in Buenos Aires from their hometown of Posadas, but the trip kept being postponed due to health and financial challenges.

Undeterred, Ricardo's family secretly teamed up with Diego to arrange a surprise reunion in Posadas.

Video shows Ricardo in complete shock as he realises his brother is standing right in front of him.

Ricardo's granddaughter, Aldana Romero, 24, said: "The reunion was incredibly meaningful for them, allowing them to forget everything that had kept them apart. "

"We had wanted to take Ricardo to Buenos Aires to see Diego, but with the delays, this surprise allowed the whole family to be part of the moment."