Putin signed a decree naming more than 40 airports in the country. The document was published on Friday May 31st on the official Internet portal of legal information. This decree gave Murmansk International Airport the name of Sovereign Nicholas II, Pskov Airport - Grand Duchess Olga, Voronezh International Airport (Chertovitsky), the international airport Voronezh). Emperor Peter I, and the international Kaliningrad Airport (Khrabrovo) was named after Empress Elizabeth Petrovna.