Are there any criminal punishments for dual citizenship other than taking away your sg citizenship? I dont think there are any, the worst the singapore government can do is to take away your sg citizenship, which might not be a bad thing if you are in a better country.
CONSTITUTION OF THE REPUBLIC OF SINGAPORE
Deprivation of citizenship on acquisition of foreign citizenship
134. —(1) The Government may, by order, deprive a citizen of Singapore of his citizenship if the Government is satisfied that —
(a) he has, while of or over the age of 18 years, at any time after 6th April 1960 acquired by registration, naturalisation or other voluntary and formal act (other than marriage) the citizenship of any country outside Singapore or having so acquired such citizenship before the age of 18 years continues to retain it after that age; or
(b) the citizen, being a woman who is a citizen of Singapore by registration under Article 123 (2), has acquired the citizenship of any country outside Singapore by virtue of her marriage to a person who is not a citizen of Singapore.
(2) Where the Government has made an order under this Article depriving a citizen of Singapore of his citizenship, he shall cease to be a citizen with effect from the date of the order.
CONSTITUTION OF THE REPUBLIC OF SINGAPORE
Deprivation of citizenship on acquisition of foreign citizenship
134. —(1) The Government may, by order, deprive a citizen of Singapore of his citizenship if the Government is satisfied that —
(a) he has, while of or over the age of 18 years, at any time after 6th April 1960 acquired by registration, naturalisation or other voluntary and formal act (other than marriage) the citizenship of any country outside Singapore or having so acquired such citizenship before the age of 18 years continues to retain it after that age; or
(b) the citizen, being a woman who is a citizen of Singapore by registration under Article 123 (2), has acquired the citizenship of any country outside Singapore by virtue of her marriage to a person who is not a citizen of Singapore.
(2) Where the Government has made an order under this Article depriving a citizen of Singapore of his citizenship, he shall cease to be a citizen with effect from the date of the order.