President Barack Obama said the United States will join the European Union in imposing tougher sanctions on Russia's financial, energy and defence sectors after Moscow sent troops into eastern Ukraine last month.
"These measures will increase Russia's political isolation as well as the economic costs to Russia, especially in areas of importance to President Putin and those close to him," Obama said in a statement.
The President said the US will provide details on the new steps tomorrow.
Were the Russians -as Barack Obama claims - weighed down by sanctions, or where the Ukrainians looking to cut their losses?
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