The European Union has added HTX, the crypto exchange owned and advised by billionaire Tron founder Justin Sun, to its latest round of Russia sanctions. The exchange was caught in the EU's 21st sanctions package, adopted Thursday, which the bloc called its largest batch of individual listings in four years, at 218. HTX appears under its operator, Huobi Global SA, on an annex of crypto and financial firms the EU accused of "significantly frustrating" its Russia measures.