A large group next of kin of MH17 victims wrote letters to US Minister of Foreign Affairs John Kerry, Ukraine president Poroshenko and Russian Federation president Putin.
In the letter the next of kin request to hand over radar data as well as satellite photos and satellite infra-red data.
Poroshenko did not respond yet.
Putin did not respond. However Oleg Storchevoy, the deputy head of Rosaviatsia, the agency representing Russia in the Malaysia Airlines flight MH17 crash investigation, published on Russia Today website a response to the relatives of the victims in a lengthy letter. The next of kin did not receive a personal letter by email or letter.
The letter of the next of kin was dated January 5, 2016.
John Kerry responsed by a letter dated March 7 2016. The letter is here.
/two months later Kerry does not answer the question about handing over radar data or satellite photos. Kerry just says that the US believes MH17 was shot down by a missile from an area controlled by the separatists.