HELSINKI (Reuters) – Finland will decide to apply for NATO membership on May 12, Finnish newspaper Iltalehti reported late on Sunday, citing anonymous government sources. The decision to join will come in two steps on that day, with Finnish President Sauli Niinisto first announcing his approval for the Nordic neighbour of Russia to join the Western defence alliance, followed by parliamentary groups giving their approval for the application, the paper reported. Russia’s invasion of Ukraine has pushed Finland and Sweden to the verge of applying for NATO membership and abandoning a belief held fo…