Riga, June 2, IRNA Iranian Foreign Minister Mohammad Javad Zarif arrived in this Latvian capital on Thursday. Latvia is the fourth and last leg of Zarif's four-nation European tour that started on May 29. In Riga, Zarif will meet with his Latvian counterpart and some other top officials here. Zarif first arrived in Poland, then travelled to Finland. After that, he flew to Sweden. By IRNA