; and (II) the suspension of sanctions under this Act or any amendment made by this Act is essential to the advancement of such negotiations; and (ii) the Government of Syria has demonstrated a commitment to a significant and substantial reduction in attacks on and violence against the Syrian people by the Government of Syria and associated forces. (B) Renewal of suspension of sanctions The President may renew a suspension of sanctions under subparagraph (A) for additional periods not to exceed 120 days if, for each such additional period, the President submits to the appropriate congressional committees in writing a determination and certification that— (i) the conditions described in clauses (i) and (ii) of subparagraph (A) are continuing to be met; (ii) the renewal of the suspension of sanctions is essential to implementing an agreement described in subparagraph (A) or making progress toward concluding an agreement described in subparagraph (A); (iii) the Government of Syria and associated forces have ceased attacks against Syrian civilians