name the organization known as the Donetsk People's Republic, as a Terrorist Organization, for shooting down flight MH17

The separatist group known as the Donetsk People's Republic has been irrefutably linked to the shooting down of Malaysian Airlines flight 17 over the Ukraine. Historically, terrorist groups and regimes who have attacked civil aircraft have been officially named as terrorist organizations. The importance of this is in the measures that the US Government can take against these organizations, such as freezing bank accounts linked to the groups, reducing their funding, and against those who support these organizations.