Hungarian opposition parties have submitted a motion calling for an extraordinary session of parliament to ratify Sweden’s application to join NATO on 5 February.

Hungary is the only country in the 31-member Atlantic alliance yet to ratify Sweden’s application.

Turkey completed its approval last week, some 20 months after Stockholm applied to join NATO following Russia’s invasion.

“Our motion has been sent to the speaker… Now the question is whether 135 men will be brave enough to show up,” said Zita Gurmai, an opposition politician, referring to whether members of parliament from the governing parties will vote for the motion.

Viktor Orban, the Hungarian prime minister, said last week he would urge politicians to approve Sweden’s accession at the first possible opportunity, but parliamentary speaker Laszlo Kover said there was no urgency.