8.4 Increases in Russian Helium TaxesNotwithstanding the provisions of paragraph 8.3, in the event of any increase in Rus-sian Helium Taxes from the rates in effect as of January 1, 2020, Seller shall Notify Buyer as soon as possible after becoming aware of such changes and the responsibility for such increased Russian Helium Taxes shall be shared equally between Buyer and Seller. However, if Buyer’s FCA cost to purchase Helium pursuant to this Agreement increases by more than ten percent (10%) as a result of such increased Russian Helium Taxes, then Buyer shall have the right to terminate the Agreement, unless Seller agrees to absorb more than its equal share of such increased Russian Helium Taxes to limit Buyer’s increased cost to ten percent (10%).