“I believe it was important to return the sailors home to make sure that at least some kind of dialogue with Russia takes place. It was important to return other political prisoners, including Sentsov. All of it is important. I do not think that we would get to know something new from the suspect in the attack on MH17 in addition to the fact that we already know,” Volker said.
According to the U.S. Special Envoy to Ukraine, the price of the prisoner swap was not so high for Ukraine as it is said.
Volodymyr Tsemakh, the key witness in the MH17 crash case in Donbas was transferred to Russia within the prisoners’ exchange on September 7.
Previously, Ukrainian and Dutch authorities confirmed that Tsemakh was interviewed by investigators from the State Prosecutor's Office of the Netherlands before he left Ukraine and went to Russia; this is due to the exchange of prisoners that took place on September 7. Ukraine and Russia conducted the "35 for 35" exchange.
On July 17, 2019, the Security Service of Ukraine stated that it detained Volodymyr Tsemakh, the ex-militant of Donetsk People’s Republic (DPR), involved in the transportation of Buk missile system, which downed MH17. He was detained during the crossing of the border with Russian controlled by Ukraine.
Boeing 777 of Malaysian Airlines, flight number MH17 was destroyed while performing a regular flight from the Netherlands to Malaysia in July 2014. The tragedy took place in the sky over the militant-held section of Donetsk region. All 298 people aboard deceased; most of the victims (196) were Dutch, but there were citizens of another nine countries as well.