“Russia to sell dozens of Su-35 to Iran: report,” Mehr, December 28, 2021.  “The website “19fortyfive” has cited an earlier report by another website the “aviacionline” as saying that Iran and Russia will sign a 20-year, $10 billion security and defense cooperation agreement in January 2022, which would include the purchase of Su-35 fighters, S-400 missiles and a satellite. According to information gathered a defense analyst, the agreement will include the purchase of at least 24 Sukhoi Su-35SE heavy fighters.”

$251 million is a lot of tea.  “Iran accepts tea in payment for Sri Lankan oil debt,” Agence France-Presse, December 28, 2021.