U.S. sanctions on Russia hit oil freight rates
The U.S. announced stricter sanctions on Russia to reduce its energy earnings.
These sanctions target major Russian oil companies like Gazprom Neft and Surgutneftegas.
They also include 183 oil tankers, many of which are part of a "shadow fleet" or owned by Russian operators.
The sanctions have increased shipping costs for oil transport.
This move could disrupt Russia's ability to distribute oil by sea.
