The United States announced fresh sanctions against Russia’s Rosneft and Lukoil to further limit their access to Western financing and energy infrastructure. The decision pushed Brent crude to $64 a barrel, up 2% in early trade. Washington said the move targets revenues funding Moscow’s military activities. Analysts warned that the restrictions could tighten global supply chains and redirect flows toward Asia as refiners seek non-Russian grades. European energy firms reported minor logistical delays as markets assessed impacts on shipping costs and insurance premiums this week.