Sign up now for FREE unlimited access to Reuters.com Register April 15 (Reuters) – Ukrainian Defense Ministry spokesman Oleksandr Motuzyanyk said on Friday that for the first time since the start of the invasion, Russia had used long-range bombers to attack the besieged port city of Mariupol. Motuzyanyk said Russia was focusing its efforts on capturing the cities of Rubizhne, Popasna and Mariupol. Sign up now for FREE unlimited access to Reuters.com Register Report by Natalia Zinets Written by Alexander Winning? curated by John Stonestreet Our role models: The Thomson Reuters Trust Principles.