Ukraine sees no need to change the Minsk and Normandy negotiating formats on Donbas, Ukraine's President Petro Poroshenko said.

"We see no need to change the Normandy format and have some trend in parallel to the Minsk process. We did discuss our U.S. partners' more active involvement in the Normandy format, we are fully open and welcome these steps, and will welcome their more active participation, including representation in the format of the Minsk process, including within the Trilateral Contact Group," Poroshenko said at a briefing in Washington on Wednesday at the end of his U.S. visit.

This could give in "a second breath, a reset and produce a fast result," Poroshenko said.

He also said that during his visit to Washington he and senior U.S. officials discussed further sanctions police on Russia. "We discussed concrete plans, which involve: first, keeping in place, and sometimes reinforcing, the sanctions regime with respect to Russia, right until full implementation of the Minsk agreements," Poroshenko said.

This is a very important issue, and it is not coincidental that the U.S. introduced new sanctions against Russia during the Ukrainian delegation's visit to Washington, he said.