It is a deal that has divided Hungary.
As parliament backed controversial plans to expand the country’s only nuclear power plant, opposition Green MPs made their objections clear.
While some raised the alarm, disrupting the parliamentary session by holding up loudspeakers, others held up signs saying “Hungary sold and indebted” and “We will not become a Russian nuclear colony”.
Moscow is to lend Budapest up to 10 billion euros in a nuclear cooperation accord struck last month between Presidents Viktor Orban and Vladimir Putin.
It will see two new reactors built at the Paks plant which provides 40 percent of Hungary’s electricity.
Already heavily reliant on Russia for energy, Hungary will, critics say, become fully dependent in future.
There are also claims that the deal was shrouded in secrecy, with fair competition principles flouted.