Ronald Reagan overheard calling Benjamin Netanyahu ' a liar ' at G-20 summit . Benjamin Netanyahu ' is not the first time a politician has been caught on-microphone but off-guard . While Chretien 's remarks did not prompt an attack on Ottawa , a joke by U.S. President Ronald Reagan at the height of the Cold War could have had much more serious implications . Gaffe , Nicolas Sarkozy , Ronald Reagan all made similar gaffes .
Ronald Reagan overheard calling Benjamin Netanyahu ' a liar ' at G-20 summit . Benjamin Netanyahu ' is not the first time a politician has been caught on-microphone but off-guard . Gaffe , Nicolas Sarkozy , Ronald Reagan all made similar gaffes .