Pheu Thai MPs are leading calls for Foreign Minister Don Pramudwinai to step down and take responsibility for his "misinformed" remarks about the conflict between the US and Iran.
Pichet Chuamuangpan, Pheu Thai MP for Chiang Rai, said on Thursday that Mr Don should take responsibility as his comments might do more harm than good for the country.
Mr Pichet comments came during the House's second reading of the 2020 Budget Bill.
On Tuesday, Mr Don told reporters at Government House that the US had told Thailand about the drone attack which killed Iranian Quds Force leader Qassem Soleimani on Jan 2, the day before it happened, explaining that normally such an advisory would go through Asean, which Thailand chaired until recently. However, on the same day, Busadee Santipitaks backtracked on Mr Don's statement saying that the minister was "misinformed".
Somkid Chueakong, Pheu Thai MP for Ubon Ratchathani, added Mr Don's remarks may have hurt the country's foreign standing.
Mr Somkid said that he is ready to ask Mr Don about his remarks at a censure debate which is scheduled to take place soon.
In a related matter, after US President Donald Trump shared a message of de-escalation on Wednesday following Iran's missile attacks on US forces in Iraq, Pithaya Pookaman, a former Thai ambassador, said that the US could easily have resorted to using a military response if Iran had inflicted casualties.
Mr Pithaya said that Mr Trump's decision to impose "additional punishing sanctions" could be construed as a conciliatory approach to US-Iran tensions which escalated last week following the assassination by the US of one of Iran's top commanders, Maj Gen Soleimani.
"Trump had threatened to hit Iran 'very fast and very hard' if Iran attacked American personnel or assets, but he has enforced sanctions instead because the missile strike resulted in no American or Iraqi deaths. I think the US anticipated the attack and stepped up security measures in advance," he told the Bangkok Post.
"Trump is a businessman-cum-politician, so he doesn't want war. Having said that, he must demonstrate leadership in diplomacy. I believe if Iran's attack had killed a single American, the US would have struck back. Therefore, sanctions are the best course of action in response to Iran's [innocuous] missile attacks," he said.
Mr Pithaya said Iran's missile attacks were calculated only to cause damage, not claim lives because its government had to respond to calls by militants for revenge.
"However, Iran struck back in a way that did not provoke a reaction from the US. I think Iran cannot rival the US in military terms so it pinpointed a suitable location to avoid killing people," he said.
Neither the US or Iran want war because it will inflict mutual damage, he said.