Putin’s refusal to compromise on Ukraine, say analysts, is a colossal error costing Russia regional influence, lucrative energy markets and its place in the world.

Peskov also addressed recent comments by US President Donald Trump, noting that the world has grown accustomed to his sometimes “harsh” rhetoric.

President Donald Trump announced this week that the U.S. will send Patriot air-defense missiles to Ukraine and threatened new tariffs on Russia. Will Vladimir Putin back down? What should Trump's next move be? And what does the future hold for Ukraine? Newsweek contributors Daniel R. DePetris and Dan Perry debate:

President Vladimir Putin believes Russia's economy and its military are strong enough to weather any additional Western measures, sources said.

Former Secretary of State Condoleezza Rice said she believes “this last week was a turning point” in the U.S. and European stance toward Ukraine and Russia.

A face-to-face meeting between the Ukrainian and Russian leaders is needed "to truly ensure a lasting peace," Zelensky said late on Saturday.

The chances of an end to hostilities in Ukraine are low, and the death of Russian President Vladimir Putin would not change this, a German military academic has told the Sunday edition of Vienna's Kurier newspaper.

Vladimir Putin’s conduct has prompted Donald Trump’s shift as Russia’s war effort in Ukraine has gotten only more aggressive.