US, allies ready to punish Russia more over Ukraine
US Treasury Secretary says Moscow must back the peace plan.
The United States says the international community is ready to punish Russia further if it does not show a more constructive approach in Ukraine.
Addressing a news conference in Berlin on Thursday, US Treasury Secretary Jack Lew said Moscow must back the peace plan instead of destabilizing the situation.
He said his country will continue to urge Russia to work with Ukraine to reach a negotiated resolution to the current situation.