probably because he was against ousting assad
https://www.aljazeera.com/opinions/2014/10/1/kissingers-lessons-for-todays-policymakers
And at the infancy of the Syrian conflict three years ago, when Obama rushed to declare that Bashar al-Assad must go, Kissinger was quick to call the pronouncement premature and a mistake for not knowing who will fill the vacuum created by Assad’s departure.
he learned to dodge the curse