By Johan Ahlander and Simon Johnson STOCKHOLM (Reuters) -Sweden will formally apply for NATO membership in the next few days, Prime Minister Magdalena Andersson said on Monday, but its accession process, and that of Finland, hit a snag when NATO member Turkey’s president said he would not approve either bid. Sweden and Finland need each of NATO’s 30 members to approve their applications. The ratification process had been expected to take up to a year, though Turkey’s objections have thrown that into doubt. At a news conference, Turkish President Tayyip Erdogan said Sweden and Finland should no…