Ukrainian soldiers on the front lines are increasingly willing to support President-elect Donald Trump’s call to begin negotiations to end the war.

Ukrainian President Volodymyr Zelensky says President-elect Donald Trump is "strong and unpredictable" and that he can not end the war in one day as claimed.

The Urengoy-Pomary-Uzhgorod pipeline was built in the Soviet era to carry Siberian gas to European markets. It became the main conduit to Ukraine’s border with Slovakia from Siberia, passing through the town of Sudzha — which is now under the control of Ukrainian military forces — in Russia’s Kursk region.

Industrial production has screeched to a halt in Transnistria, a breakaway region of Europe, after Russian gas flows through Ukraine came to an end.

CNBC's Silvia Amaro and Steve Sedgwick discuss Europe's gas supply needs, and the potential for the U.S. to "come to the rescue."