Trump and Haspel

Fifteen years before President Trump nominated her and the US Senate confirmed her as CIA director, Gina Haspel personally oversaw the waterboarding of alleged USS Cole bomber Abd al-Rahim al-Nashiri at a black site prison in Thailand in 2002, according to recent testimony at a military tribunal at Guantanamo Bay, Cuba.

Waterboarding has been recognized as a war crime since World War II, when the US prosecuted Japanese soldiers for, among other charges, torturing American POWs with waterboarding.

Source: Haspel Personally Observed CIA Waterboarding, Witness Testifies | National Security Archive