The Spartans knew that they did not have much of a chance of withstanding the renewed allied assault .
Gorgopas decided to surrender the city to the Romans under the condition that the garrison was allowed to leave the city unharmed .
The Spartans knew that they did not have much of a chance of withstanding the renewed allied assault and Gorgopas decided to surrender the city to the Romans under the condition that the garrison was allowed to leave the city unharmed .