(NBC NEWS) NEWPORT, Wales — The United States is preparing a new round of economic sanctions against Russia for its incursion into Ukraine, a senior White House official said on Thursday on the fringes of a NATO summit in Wales. Deputy White House national security adviser Ben Rhodes gave no details of the sectors that would be targeted but told reporters that the new penalties were being finalized.
"The key point is that Russia must continue to face costs for its own escalation," he said.
"If Russia escalates, we can escalate our pressure." Earlier, Ukraine President Petro Poroshenko announced the main pro-Russian rebel leader said they would both order ceasefires on Friday, provided that an agreement was signed on a new peace plan.
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