Doing so would require the Russian leader to “accept the failure of sitting down with a president he considers a joke from a country that doesn’t exist”

A potential meeting with Russian leader Vladimir Putin, as well as U.S. President Donald Trump, could be held in one of Europe’s neutral countries—Switzerland, Austria, or Turkey. — Ukrinform.

President Vladimir Putin is prepared to meet Ukrainian President Volodymyr Zelenskiy but all issues need to be worked through first and there's a question about Zelenskiy's authority to sign a deal, Putin's foreign minister said on Thursday.