纽兰称乌克兰停火协议充分落实之前不会解除对俄制裁

A top U.S. diplomat says sanctions against Russia for its role in the Ukraine crisis will remain in place until a long-violated truce agreement is fully honored. 

U.S. Assistant Secretary of State Victoria Nuland also warned Saturday that Moscow will pay "more costs" for future violations of the Minsk peace deal.

Nuland spoke in the Ukraine capital, Kyiv, to a gathering of Ukrainian and foreign political and business dignitaries.

"If and when Minsk is fully implemented, including [the] return of Ukraine sovereignty of its border, we can begin to roll back some sanctions," she said.

The United States and the European Union have accused Moscow of stoking the 17-month pro-Russian rebellion in Ukraine's east, and have imposed a series of economic sanctions aimed at deterring Russian military and logistical involvement.