Russia wants a long-term peace deal over Ukraine that tackles what it regards as the root causes of the conflict and not a quick U.S.-backed ceasefire followed by a swift restart of fighting, a senior Russian diplomat told the RIA news agency.

Russian President Vladimir Putin said on Monday that Russia was not opposed to Europe's involvement in Russia-U.S. peace talks aimed at settling the conflict in Ukraine, but noted that Brussels had long rejected any dialogue with Moscow.

U.S. President Donald Trump said on Monday that Russian President Vladimir Putin accepts the idea of Europe sending peacekeepers to Ukraine as part of a ceasefire agreement, and French President Emmanuel Macron said Europe is ready to help.

The United States will lose if Russia wins its war in Ukraine, Finland's president said on Monday, as fears mount in Europe about President Donald Trump's intentions three years after Moscow's invasion.

Europe's participation in Ukraine peace talks will be needed eventually but Moscow first wants to build trust with Washington, President Vladimir Putin said on Monday, while suggesting that a deal to end the conflict may still be far off.