NATO Deputy Secretary General Alexander Vershbow has called on the Ukrainian authorities and the opposition to refrain from violence and to engage in a political dialogue.

"NATO continues to follow Ukrainian events with concern," the U.S. diplomat wrote on Twitter on Tuesday, following an ambassadorial meeting of the NATO-Ukraine Commission.

NATO calls "on all to refrain from violence, engage in a political dialogue," he wrote.

"At the NATO-Ukraine Commission, all agreed that Ukraine's future lies with Europe," Vershbow added.