Kurdish Forces guarding a US military base in northern Syria told CNN they feel they’ve been betrayed by their American allies after Trump cleared the way for aTurkish Operation against them.”The Americans sold us out and we do not expect them to help us fight the Turkish troops,” one Kurdish fighter told CNN, as a US flag fluttered over the base.US personnel at the base in northern Syria said they could not speak to CNN due to the sensitive nature of their work here. But, based on comments from the Kurds protecting the base, their relationship has become strained.Even though US forces have pulled back from the border area where Turkey is staging its military operation , there are still American military personnel deployed across parts of northern Syria.