THAI Foreign Minister Thaksin Shinawatra aims to dispel doubts about his suitability for the post even if Parliament passes new laws on Wednesday that threaten to remove him, his advisers say. A constitutional revamp threatens to unseat the controversial Cabinet member because it could, among other changes, bar ministers from holding positions in private companies or being party to a government monopoly concession. Mr Thaksin founded and is still the largest shareholder in Thailand's biggest telecommunications group, Shinawatra Computer and Communications. As an aggressive entrepreneur, the former policeman built his business empire on his ability to win government contracts. The company operates the country's only two commercial satellites and has now begun to bid for fixed-line telephone networks, cellular phone systems and television stations in the rest of the region. Mr Thaksin was awarded the post when the autocratic leader of the Palang Dharma party, Chamlong Srimuang, sacked all 11 of his party's ministers two months ago in a desperate bid to boost his party's flagging popularity. One disenchanted Palang Dharma MP, Kuthep Saikrachang, said: 'The only honourable way out is for Thaksin to resign before Parliament approves the constitution or step aside immediately after the new charter becomes law.' Although Mr Thaksin has told local reporters he is privately undecided what to do, close aides say he is confident that with the support of his Cabinet colleagues he will be able to retain his coveted portfolio. 'If my tenure turns out to be unconstitutional I will not stay on but that is not clear at the moment.' He stressed that he had no intention of shedding his shares in the Shinawatra group - his 25 per cent stake in the flagship holding company is worth US$1.2 billion (HK$9.28 billion) alone. Under Thai law, Mr Thaksin is in any case considered a legal entity with his wife, who also owns 25 per cent and has taken over the chairmanship of the company. He reportedly said: 'I will not adjust or reduce my shareholdings even if that would help dispel any doubt about my suitability when considered against the proposed constitution because that is against my feelings and my principles.' Mr Thaksin has not explained why he accepted a non-elected position only three months after telling reporters that 'as a believer in democracy' he would have to refuse a Cabinet offer because he wanted to be elected to Parliament. The new Foreign Minister has not dispelled repeated criticism from within the country that Thai policy towards its neighbours remains damagingly ambiguous. Critics have said that foreign policy often appears to retain Cold War-style hostility and to condone economic opportunism. However these are early days. Mr Thaksin said he wanted to introduce corporate-style efficiency into the ministry. He thinks that the pivotal 'Four Ms' of business which he emphasised at Shinawatra can also be employed in the Foreign Ministry - namely management, men, material and money.