For 10 points, give the name of the ruler who succeeded Darius the Great and whose forces were defeated in the second Persian invasion of Greece.
This monarch got suckered by a message delivered to him by Sicinnus claiming Sicinnus' master was loyal to this man. While not his father's eldest son, he succeeded to the throne because he was the son of Atossa. This ruler was killed in a conspiracy involving his bodyguard Artabanus. His forces won one battle thanks to the treachery of Ephialtes. This man ordered the building of the Gate of All Nations, enhancing his father's building projects at (*) Persepolis. He reportedly whipped the Hellespont three hundred times before bridging it. This ruler had forces that won the bloody Battle of Thermopylae before losing at the Battle of Salamis. For 10 points, give the name of the ruler who succeeded Darius the Great and whose forces were defeated in the second Persian invasion of Greece.
This monarch got suckered by a message delivered to him by Sicinnus claiming Sicinnus' master was loyal to this man.
Xerxes I [or Xerxes the Great]