simple: Siam wasn't ruled by any European power at the time so there is no reason for Japan to attack Thailand.

Jap: Open up or we'll make you open up.

Thai: *spreads legs

Also every Thai: We weren't invaded.
You can't rape the willing.

There nothing wrong for being neutral in WW2 while regained back lost territories as bonus

Bekerjasama lar with jepunis. They are the one to let them masuk malaysia. Lol

pandai dia main

depan axis - yo, aku gang yo
depan org lain lepas axis kalah - saya terpaksa je

Last I check, that is not the definition of neutral in dictionary.

Do you know why Siam rename to Thailand after end of WW2?

if isn’t Neutral whats your definition?
Siam giving free access passage to Imperial Japanese to liberate and attack western colonies in return Siam maintains sovereignty without any bloodshed on her subjects plus regains her lost territories due to unfair treaty with western colonialists.
Neither Siam offer military assistance nor involved directly in WW2 combat siding Imperial Japan. Its retarded to think Siam will sacrifice her military to assist western allies to fight a war that doesn’t benefited her.

Do you know why Siam rename to Thailand after end of WW2?

The country was renamed on June 23rd, 1939. Stamps commemorating King Rama VI (left) and King Rama IX (right). People speaking one of the Tai group of languages settled in what is now Thailand around 1,000 years ago.

Source : https://www.historytoday.com/archive/siam-b...0%20years%20ago.

if isn’t Neutral whats your definition?
Siam giving free access passage to Imperial Japanese to liberate and attack western colonies in return Siam maintains sovereignty without any bloodshed on her subjects plus regains her lost territories due to unfair treaty with western colonialists.
Neither Siam offer military assistance nor involved directly in WW2 combat siding Imperial Japan. Its retarded to think Siam will sacrifice her military to assist western allies to fight a war that doesn’t benefited her.

Do you know why Siam rename to Thailand after end of WW2?

Thailand in World War II officially adopted a position of neutrality until the five hour-long Japanese invasion of Thailand on 8 December 1941, which led to an armistice and military alliance treaty between Thailand and the Japanese Empire in mid-December 1941. At the start of the Pacific War, the Japanese Empire pressured the Thai government to allow the passage of Japanese troops to invade British-held Malaya and Burma. The Thai government under Plaek Phibunsongkhram (known simply as Phibun) considered it profitable to co-operate with the Japanese war efforts, since Thailand saw Japan – who promised to help Thailand regain some of the Indochinese territories (in today's Laos, Cambodia, and Myanmar) which had been lost to France – as an ally against Western imperialism. Axis-aligned Thailand declared war on the United Kingdom and the United States and annexed territories in neighbouring countries, expanding to the north, south, and east, gaining a border with China near Kengtung.


The territories and boundaries of Kingdom of Thailand in World War II.
After becoming an ally of the Empire of Japan, Thailand retained control of its armed forces and internal affairs. The Japanese policy on Thailand differed from their relationship with the puppet state of Manchukuo. Japan intended bilateral relationships similar to those between Nazi Germany and Finland, Bulgaria, and Romania. However, Thailand at that time was labelled by both the Japanese and the Allies as the "Italy of Asia".[why?]

Meanwhile, the Thai government had split into two factions: the Phibun regime and the Free Thai Movement, a well-organised, pro-Allied resistance movement that eventually numbered around 90,000 Thai guerrillas, supported by government officials allied to the regent Pridi Banomyong. The movement was active from 1942, resisting the Phibun regime and the Japanese. The partisans provided espionage services to the Allies, performed some sabotage activities, and helped engineer Phibun's downfall in 1944. After the war, Thailand returned the annexed territories but received little punishment for its wartime role under Phibun.
Source : https://en.wikipedia.org/wiki/Thailand_in_W..._II?wprov=sfla1

Tell me what do you know.

Name change was done before WW2

Not sure where you got that info but Japan actually invade first. And at the same time, There was a coup and new regime that favours japanese came to power. You can read it up in wiki.