United States – The American Envoy to the UN, Nikki Haley said regarding recent clashes, "The Syrian regime's violations of the ceasefire in southwest Syria need to stop," while also saying, "Russia will ultimately bear responsibility for any further escalations in Syria."[174] After the beginning of the offensive, a letter sent to rebel leadership stated that they "We are fully aware that you have to make your decision according to your interests and the interests of your families and faction as you view them, and you must not base your decision on the assumption or an expectation of a military intervention from our side."[175] 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."[176] On 26 June, the United States State Department stated regarding the increase in violence and violation of the de-escelation agreements, "We are concerned by developments in southwestern Syria, particularly the intensification of Russian airstrikes and pro-regime ground attacks.