Russia Must Engage With Kiev , Says G7

U.S. President Barack Obama and U.K. P.M. David Cameron said Moscow must recognize Petro Poroshenko , who takes office as President on Saturday

The G7 leaders meeting in Brussels said they were fully behind Mr. Poroshenko

Later in Paris , Mr Cameron met Russian President Vladimir Putin , giving him a "very clear and firm set of messages"

The two leaders met in a customs area of the French capital's Charles de Gaulle airport

This was Mr.Putin's first face to face meeting with a Western leader since the Ukraine crisis began , "the status quo , the situation today , is not acceptable  and it needs to change " Mr. Cameron said

"We need the Russian's to properly recognize and work with this new President , we need de escalation , we need to stop arms and people crossing the border , we need action on these fronts "

Mr. Putin later met French President Fransois Hollande for dinner , but accoording to Russian media no announcements were made after the meeting , Mr Hollande was too see Mr. Obama for a separate meal

Mr.Putin has not ruled out a meeting with Mr. Poroshenko at a ceremony to mark the 70th anniversary of thr D-Day landings in Normandy on Friday

Meanwhile , fighting continued in Eastern Ukraine , with reports of an attack on a border post in the Donetsk region

A convoy of vehicles carrying Pro Russian separatists was involved in the attack near the Marynivka checkpoint which has now been repelled by government forces , the Ukrainian border guard service said , the attack comes a day after rebels seized a border guardbase in neighbouring Luhansk region after days of combat

Speaking at a newa confrence in Brussels with Mr. Cameron , Mr. Obama said Russia should "seize the opportunity provided by the change of leadership in Kiev , and be prepared to face sanctions if the situation continued to deteriorate

"Russia needs to recognize that President elect Poroshenko is the legitimatelyelected leader of Ukraine and engage the government in Kiev" he said

"Given its influence over the militants in Ukraine , Russia continues to have a responsibility to convince them to end their violence , lay down their weapons and enter into dialogue with the Ukrainain government"

"On the other hand , if Russia's provocations continue , its clear from our discussion here that the G7 nations are ready to impose additional costs on Ruussia"

European Commission President Jose Manuel Barroso said the group was united in sending a "resolute message" to Russia , that it should "recognize and fully engage with" the new Ukrainian authorities , he added  that Russia should "take concrete and credible measures to de escalate the situation in the East of Ukraine