The Kremlin says a settlement in Ukraine can't be facilitated by a drop in global oil prices as U.S. President Donald Trump has suggested.

Kremlin spokesman Dmitry Peskov, responding to a question about those comments, said the issues for Russia in Ukraine were about national security, threats to Russians living there, and the refusal of the United States and Europe to listen to Russia's concerns.

The Kremlin is responding after President Donald Trump called on Russia to make a deal with Ukraine to end the conflict there. CNN’s Matthew Chance reports.

NATO Secretary General Mark Rutte reaffirmed on Thursday the need to step up support for Ukraine, adding it was vital Russia did not win as it could result in Russian President Vladimir Putin 'high fiving' the leaders of North Korea and China.

The U.S. president used the World Economic Forum to offer the global elite a warning: He intends to follow through on his “America First” campaign promises.