People in Moldova have backed the Eastern European country's proposed changes to its constitution and commitment to joining the EU by the thinnest of margins in a referendum. Official data put Yes on 50.46% and No on 49.54% on Monday afternoon, with more than 99.6% of votes counted.

A referendum that constitutionally enshrines a national objective to join the E.U. passed by a thin margin. The incumbent pro-E.U. president won the most votes in a concurrent election, but faces a runoff.

"This vote took place under unprecedented interference and intimidation by Russia and its proxies, aiming to destabilise the democratic processes in the Republic of Moldova," Peter Stano, the EU spokesperson said.