President Donald Trump signed a bill into law on Friday that imposes a new round of sanctions against Russia amid its war with Ukraine.

The new law, formally known as the Lindsey O. Graham Sanctioning Russia and Iran Act of 2026, targets Russia’s energy sector by authorizing the president to impose up to 100% tariffs on countries purchasing Russian oil and natural gas. It sanctions Russian President Vladimir Putin and other Russian officials and entities as well, and also extends sanctions on Iran’s energy and weapons sectors.