Conspiracy theories and cosying up to dictators: why intelligence experts are spooked by Tulsi Gabbard

Trump's pick for director of national intelligence has long been regarded as dangerous for her Syria contacts and stance on Ukraine

In 2018, a Syrian dissident codenamed Caesar was set to testify before the House foreign affairs committee about the torture and summary executions that had become a signature of Bashar al-Assad's brutal crackdown on opposition during Syria's civil war.

It was not Caesar's first time in Washington: the ex-military photographer had smuggled out 55,000 photographs and other evidence of life in Assad's brutal detention facilities years earlier, and had campaigned anonymously to convince US lawmakers to pass tough sanctions on Assad's network as punishment for his reign of terror.