Nicolas Sarkozy overheard calling Benjamin Netanyahu ' a liar ' at G-20 summit . Comment: George W. Bush , Ronald Reagan , Joe Biden all made similar gaffes .
Nicolas Sarkozy overheard calling Benjamin Netanyahu ' a liar ' at G-20 summit . Gaffe is not the first time a politician has been caught on-microphone but off-guard . George W. Bush , Ronald Reagan , Joe Biden all made similar gaffes .