What philosopher along with Alcibiades, son of Cleinias, and General Archestratus was sent too take Potidean hostages and demolish the city wall during 432 B.C.? 
Socrates
Archestratus (general)
Archestratus (Ancient Greek: Ἀρχέστρατος ) was a general who in 432 BCE was sent by Athens to Potidaea, in which a revolt was brewing, to take Potidean hostages and demolish the city wall.
 It is possible this expedition included the general Alcibiades and philosopher Socrates.
Alcibiades
Alcibiades, son of Cleinias, from the deme of Scambonidae ( ; Greek: Ἀλκιβιάδης Κλεινίου Σκαμβωνίδης , transliterated "Alkibiádēs Kleiníou Skambōnídēs"; c. 450–404 BC), was a prominent Athenian statesman, orator, and general.
 He was the last famous member of his mother's aristocratic family, the Alcmaeonidae, which fell from prominence after the Peloponnesian War.
 He played a major role in the second half of that conflict as a strategic advisor, military commander, and politician.
City Wall of Suzhou
The City Wall of Suzhou () is the city wall surrounding Suzhou city.
 That length of the wall was 15,204 metres before 1958.
 Most part of the wall was demolished in 1958.
 The length of remaining wall is only 2,072 metres. Cleinias, brother of Alcibiades
Cleinias (Ancient Greek: Κλεινίας ) was the son of Cleinias, and a younger brother of the famous Athenian statesman Alcibiades, and a member of the wealthy and influential Alcmaeonidae family.
 Pericles, who was the guardian of the youths, and who feared Alcibiades might somehow corrupt Cleinias, sent the latter away from his own house and placed him for education with his (that is, Pericles') brother Ariphron; but the latter sent him back at the end of six months, finding it impossible to make anything of him.
 In one of the dialogues of Plato, he is spoken of as quite a madman. Yuan Dadu City Wall Ruins Park
The Yuan Dadu City Wall Ruins Park (), also known as the Tucheng or Earth Wall Park, is an urban park and historic site in Beijing.
 The park was created in 2003 to preserve the ruins of the northern city wall of Khanbaliq or Dadu, capital of the Mongol Yuan dynasty.
 The city wall was constructed in 1267 and finished in 1276.
 It was abandoned in the Ming dynasty when Beijing was rebuilt and slightly shifted to the south.
 The northern segment of the city wall is preserved, and a narrow and long park was created around the ruin of the city wall in Haidian District and Chaoyang District. Beijing city fortifications
The Beijing city wall was a series of fortifications built between the early 15th century and 1553.
 The Inner city wall was 24 km long and 15 m high, with a thickness of 20 m at ground level and 12 m at the top.
 It had nine gates.
 This wall stood for nearly 530 years, but in 1965 it was removed to allow construction of the 2nd Ring Road and the Line 2, Beijing Subway.
 Only one part of the wall is extant, in the southeast, just south of Beijing Railway Station.
 The Outer city walls had a perimeter of approximately 28 km .
 The entire enclosure of the Inner and Outer cities formed a "凸" shape with a perimeter of nearly 60 km . Beijing Ming City Wall Ruins Park
The Beijing Ming City Wall Ruins Park () is a park in Beijing with the longest and best preserved section of the city's Ming Dynasty city wall.
 The park is located 3 km from the city center and extends west from Chongwenmen to Dongbianmen and then north to near the Beijing Railway Station.
 The park features a 1.5 km section of the Ming city wall and the Southeast Corner Tower, which are over 550 years old and surrounded by green park space to the south and east.
 The park covers an area of 15.5 ha , including 3.3 ha of fortifications and 12.2 ha of green space.
 Access to the corner tower and the ramparts atop the wall is available during business hours and require paying admission.
 The corner tower also houses the Red Gate Gallery.
 The rest of the park is free and open to the public at all times. City Wall of Nanjing
The City Wall of Nanjing () was designed by Emperor Zhu Yuanzhang (r. 1328–1398) after he founded the Ming Dynasty (1368–1644) and established Nanjing as the capital 600 years ago.
 To consolidate his sovereignty and keep out invaders, he adopted the suggestions of advisor Zhu Sheng to build a higher city wall, to collect grains and to postpone the coronation.
 Then, he started to build the city wall.
 It took 21 years to complete, and used 200,000 laborers to move 7 million cubic metres of earth.
 The City Wall of Nanjing was among the largest city walls ever constructed in China.
 The enclosed Nanjing City is about 55 square kilometers. Cleinias
Cleinias (Ancient Greek: Κλεινίας ), father of Alcibiades, brother of Axiochus, and member of the Alcmaeonidae family, was an Athenian who married Deinomache, the daughter of Megacles, and became the father of the famous Alcibiades.
 Plutarch tells us that he traced his family line back to Eurysaces, the son of Telamonian Ajax.
 Cleinias died at the Battle of Coronea in 447 BC. City wall of Jaipur
The Jaipur city wall is the city wall encircling the old Jaipur city in Rajasthan state in India.
 It was built in 1727 when the city was founded by Maharaja Jai Singh II.
The wall is six meters high and three meters thick.
 There are seven gates in the wall.The gates are: