Britain on Tuesday said it sanctioned 18 more entities helping Russia circumvent Western sanctions, including cryptocurrency exchange HTX, which it suspected funnelled $1.5 billion to the Kremlin.

The Foreign Office said Huobi Global S.A., registered in Panama and operating HTX, helped the Russian cryptocurrency exchange platform Garantex and the A7 group, both strategic for Moscow.

“The A7 network is a Kremlin-backed system designed to bypass Western sanctions, finance military procurement, and process funds from the sale of oil to fund its war economy,” it said in a statement.

“The network claimed to have moved more than $90 billion last year — equivalent to roughly half of Russia’s yearly military…