The letter also said "We, in the government of the United States of America, understand the hardships that you are facing now, and we are still advising the Russians and the Syrian regime as not to undertake any military action that violates the "de-escalation" agreement in the southwestern part of Syria."
” 信中还说：“我们，美利坚合众国政府，理解你们现在面临的困难，我们仍在奉劝俄罗斯和叙利亚政权不要在叙利亚西南地区采取任何违反降级协定的军事行动。