US oil giant Halliburton suspends operations in Russia

Schlumberger also halts business in response to US sanctions over Russia's invasion of Ukraine

Two giant US oil field services companies, Halliburton and Schlumberger, have said they are suspending operations in Russia, in response to US sanctions over the invasion of Ukraine.

Halliburton said on Friday it had suspended future business in Russia in compliance with sanctions that prohibit transactions and work, including for certain state-owned Russian customers.