The Kremlin on Monday said that a European counter-proposal to a US 28-point peace plan for Ukraine was not constructive and that it simply did not work for Moscow.

The publication of the 28-point draft US peace plan last week deepened concerns in Ukraine and among European powers that Russia’s core demands on NATO, territory and the chronology of any peace deal had been accepted by Washington.

The European plan significantly changes the meaning and significance of key points on NATO and territory, according to a copy seen by Reuters.

“The European plan, at first glance... is completely unconstructive and does not work for us,” Kremlin foreign policy aide Yuri Ushakov told reporters in Moscow.

President Vladimir Putin said on Friday that US proposals for peace in Ukraine could be the basis of a resolution of the conflict but that if Kyiv turned down the plan then Russian forces would advance further.

Ushakov said that “not all, but many provisions of this (US) plan seem quite acceptable to us.” He added that some would require more detailed discussion however.