DPM Teo Chee Hean said Singapore is not ready to have dual citizenship yet.
He had elaborated that allowing citizens to hold dual citizenships would not strengthen Singapore as a nation.
Mr Teo was concerned that allowing Singaporeans to hold dual citizenships would actually dilute the Singapore identity.
He was speaking in response to a parliamentary question by NMP Eugene Tan on the necessary pre-conditions before Singapore could allow dual citizenships.
The question was in line with the increasing trend of Singaporeans marrying foreigners. Mr Tan had suggested that allowing dual citizenship would allow children of such marriages to keep a connection with Singapore.
Mr Teo agreed that while Singapore is not prepared at the moment, "we should always keep an open mind".