Ukraine needs to let the ethnically-Russian, pro-Moscow East determine their own future. The people who live there don't wish to be ruled by Kiev.
For once, Biden is saying something that makes sense. Hope his boss agrees.
Well, first of all, this reveals a lack of understanding of the actual demographics in East Ukraine. "Ethnic Russians" are a minority even in the East. And of those ethnic Russians, only a smaller minority than that, the Communist and drunkie voting bloc, supports separatism. To say that this minority should determine their future is to basically say that they get to determine the future of the majority in East Ukraine.
What you should be saying is: "If these scumbag Communists want to join Russia, they should just cross the border into Russia."
It's also a stupid concept to begin with. Imagine La Raza trying to cut off bits of Texas because a bunch of illegal aliens crossed the border and then launched an insurgency. That's literally what is happening in East Ukraine. The fighters coming in are all from Russia, either soldiers, or else extremists recruited by government agents. Even the "separatist" leaders are Russians from Russia. The appropriate answer is to slaughter them all.