on 12 may 2022, ten weeks after the beginning of the invasion, president sauli niinistö and marin both said that "finland must apply for nato membership without delay" and that a nato membership would be good for the country's security. on 15 may, niinistö and marin announced that finland would apply for nato membership, and on 17 may the finnish parliament approved the proposal 188-8. she said her country did not want permanent nato bases or nuclear weapons on its territory. on 31 may, she supported a deal agreed by all european union leaders to ban more than 90% of russian oil by the end of the year.