The recent anti-terrorism action was spurred by pressure from the public and the international community.
Participants in foreign conflicts can receive jail sentences of at least five years.
The proposed law, which would be supported by a loan from the World Bank, is being considered by Parliament. In other business news: optimism grows for the economy's future in southeast Europe.
The recent EU conference in Berlin showed that the Union will work to get the Balkans as part of Europe, officials said.
A new EU-funded project will help Romania to develop medical technologies and improve its health care system.