On Thursday, the U.S. Treasury issued a 30-day waiver allowing India to buy Russian oil currently stuck at sea.

The conflict has left the Strait of Hormuz, a critical shipping passage, all but shut, with countries around the world cut off from a fifth of global oil and liquefied natural gas supplies.

“We are seeing a significant increase in demand for Russian energy resources in connection with the war in Iran. Russia has been and remains a reliable supplier of both oil and gas — including pipeline gas and liquefied natural gas,” Kremlin spokesman Dmitry Peskov told reporters.

“It also remains capable of guaranteeing the continuity of all deliveries for which contracts have been concluded.”

Peskov declined to disclose possible volumes of Russian oil supplies to India following Washington’s waiver, which followed months of U.S. pressure on New Delhi not to buy Russian oil.