"Thisagreement was reached with President Barack Obama," Poroshenkosaid.
Answeringthe question if the conversation with Putin makes sense at all, hesaid: "There would be no result we are having now without suchnegotiations."
"The talksare most often carried out in the 'Norman format'. Why so? Becauseit (the conflict) should not seem to be the problem of Ukraineonly. We must engage the world into this process," Poroshenkosaid.