US President Barack Obama said no settlement will be possible as long as Russia continues to send troops to Ukraine "disguised as separatists".
Obama said during a press conference in Estonia: "We have consistently supported the effort of President Poroshenko to achieve a meaningful ceasefire that could lead to a political settlement of the conflict.
"So far it hasn't helped, either because Russia hasn't been serious about it or has pretended that it's not controlling the separatists."
Were the Russians -as Barack Obama claims - weighed down by sanctions, or where the Ukrainians looking to cut their losses?
The new president of the European Council could be "very important" for David Cameron.