Icelanders have ‌voted to stay out of the European Union, broadcaster RUV reported on Sunday, rejecting a government push to reopen membership talks and siding with those who said Iceland's fishing ​waters were too important to risk.

A 'no' vote will disappoint Brussels, as some ​officials had cast Iceland as a low-risk case that could ⁠help ease scepticism toward EU enlargement and strategically strengthen the bloc when ​Arctic security is in focus.

The government had framed its membership plan as a "now ​or never" moment, and Prime Minister Kristrun Frostadottir told voters in August that a "no" would put all EU speculation aside.

"Yes" campaigners have said joining the bloc could ease high interest ​rates and offer more security in a world unsettled by war in Ukraine ​and US President Donald Trump's rhetoric about annexing another Arctic island Greenland.

"No" campaigners said EU membership would ‌threaten ⁠the island's sovereignty and fishing waters.

The referendum campaign has fuelled debate about Iceland's place in the world, Prime Minister Kristrun Frostadottir told reporters after casting her ballot in the capital on Saturday.

"This is a great day. We've been waiting ​for this for ​years to be ⁠able to have a vote," Frostadottir said, adding that her government would continue its work regardless of the outcome.

Iceland ​first applied to join the EU in 2009 when a ​financial crisis ⁠hit the country's small, exposed economy. A Eurosceptic government ended talks in 2013.

Geopolitical turmoil including war in the Middle East and US import tariffs has brought urgency to ⁠an issue ​Icelanders have debated on and off for decades.