Ukraine's parliament unanimously confirmed as foreign minister Pavlo Klimkin -- a charismatic 46-year-old ambassador to Germany who had spearheaded the EU negotiations and now represents Poroshenko at closed-door talks with Moscow.
Those high-stakes meetings and Poroshenko's late-night phone exchange on Tuesday with Russian President Vladimir Putin bolstered hopes for a solution to Ukraine's worst crisis since independence in 1991.
Poroshenko promised to soon unilaterally halt the army's 10-week push against pro-Russian insurgents who have proclaimed independence in Ukraine's eastern rustbelt -- a plan some fighters rejected but Moscow cautiously endorsed.
"We wish the new minister success and are ready for contact with him," the Russian diplomat said.
But the Kremlin's good will was immediately put in question by new charges from NATO that Putin had sent "at least a few thousand more" troops to the border in a reversal of a withdrawal he had begun at the start of the month.
"I consider this a very regrettable step backwards," NATO Secretary-General Anders Fogh Rasmussen said in London.
"It seems that Russia keeps the option open to intervene further into Ukraine.
