The US officials have a rhetorical shift on Ukraine.
With Poroshenko appeals to invade Donbass and Crimea, namely "The war will end when Ukraine regains Donbass and Crimea," the US Secretary of State John Kerry had to respond:
"If indeed President Poroshenko is advocating an engagement in a forceful effort at this time, we would strongly urge him to think twice not to engage in that kind of activity, that that would put Minsk in serious jeopardy. And we would be very, very concerned about what the consequences of that kind of action at this time may be."
Thus, the Obama Administration now had slammed Poroshenko down on the key issue of whether to resume the war against Ukraine's former Donbass region, and also slammed him on whether Ukraine should invade Crimea, which is Russian territory and would therefore mean a war against the Russian armed forces.
Another evidence of the Russian diplomacy victory is Nuland's sombre mood and refusal to talk with the press, whom Obama had placed in charge of arranging the February 2014 coup in Ukraine, and of selecting the leader of the junta that would be imposed upon Ukraine (i.e. Yatsenyuk).
Nuland now knows that she has lost, and that Obama has rejected the original plan for Ukraine, which had been for an all-out military conquest of the region, Donbass, along with killing or expelling its people.
Obama is on-board with the "Plan B" for Ukraine, which Francois Hollande and Angela Merkel had put into place, the Minsk II Agreement, that now has become clearly the utter (even accepted by Kerry) capitulation of Obama's Plan A on Ukraine, which plan Nuland had been carrying out.
Obama's message in this, through Kerry, to Ukraine's President Poroshenko, can be interpreted as: we'll back you only as long as you accept that you have failed our military expectations and that we will be stricter with you in the future regarding how you spend our military money. We're getting in line now behind the Hollande-Merkel peace plan for Ukraine.
Dmitriy Yarosh, who had been threatening to overthrow Poroshenko if he doesn't renew the war against Donbass and seize Crimea, and who had led the Ukrainian coup for the US, is now, in effect, being told: if you will try another coup, this time to overthrow our own stooges in Ukraine, then you're finished, Mr. Yarosh. Don't do it.
Putin had yet again decidedly won. Obama and the nazis he had empowered in Ukraine have now, clearly, been defeated. But the mess that Obama's people have created in Ukraine by their coup and subsequent ethnic-cleansing to eliminate the residents of Donbass, will take decades to repair.
Read more on the subject here