Russia must avoid any action that could result in a the Ukraine crisis escalating further, a spokeswoman for the German foreign ministry said on Wednesday.
"We demand the greatest possible transparency and we call on Russia to refrain from taking any steps that lead to a further escalation - that could be a combination of military exercises and troop concentrations," the spokeswoman said.
Polish Prime Minister Donald Tusk said on Wednesday the threat of a direct intervention by Russia's military in Ukraine has risen over the last couple of days.
Russia has been conducting exercises near the border with Ukraine.
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