WASHINGTON, April 11 (Reuters) - Ukrainian hackers claim to have broken into the emails of a senior Russian military spy wanted by the Federal Bureau of Investigation for hacking the Hillary Clinton campaign and other senior U. Repeated messages left at email addresses and a telephone number purporting to belong to Morgachev went unreturned, and attempts by Reuters to reach him via social media and his current place of employment - said to be the sanctioned Saint Petersburg-based Special Technology Center - were not immediately successful. See here for a complete list of exchanges and delays