Ukrainian transit gas deal to Europe ended on Jan. 1. For now, the most acute effects are being felt in a region called Transnistria, on the eastern edge of Moldova.

With transit routes through Ukraine for Russian gas cut off, a few EU countries now need to rethink their gas supply. For others – including Germany and Switzerland – the impact will be minimal.

The historic first marks a milestone in Washington’s bid to replace Russia as Europe’s top source of natural gas.

A renegade part of Moldova once boasted it would become a Russian-speaking Switzerland. Now without gas, its leader assured residents, “We will not allow a societal collapse.”

Ukraine has halted Russian gas supplies to European customers through its pipeline network, almost three years into Moscow’s all-out invasion of its neighbor

Russian natural gas flows to Europe across Ukraine appear poised to halt Wednesday, after a transit deal expires, raising the stakes for the continent’s energy security as it draws heavily on reserves.

Ukraine’s decision to end the gas transit deal with Russian energy giant Gazprom has been hailed by President Volodymyr Zelensky as one of Moscow’s biggest defeats. Today, the transit of Russian gas is zero.

This will clearly deprive Russia of about $6.5 billion in annual revenue from gas sales to Europe. It’s one of the biggest and most expensive losses for Moscow. Of course, we welcome Ukraine’s decision and its determination,

The ongoing conflict has highlighted the importance of diversifying gas supplies to build resilience against geopolitical risks.

Ukraine's move will deprive Russia of about $6.5 billion in annual revenue from gas sales to Europe, according to U.S. National Security Council spokesperson John Kirby.