Trump's son Eric Trump said his father was "deeply affected" by the TV images of children being "sprayed down by hoses to keep their skin from burning" after the suspected Syrian chemical attack, The Telegraph reported.
"It was horrible. These guys are savages and I'm glad he responded the way he responded," the 33-year-old businessman said speaking at the Trump Turnberry golf resort in Ayrshire, Scotland.
Eric said Ivanka is a mother of three kids and she has influence over the President.
"I'm sure she said 'listen, this is horrible stuff.' My father will act in times like that," he was quoted as saying by the paper.
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Eric rejected claims that his father had acted impulsively after seeing the images, saying the President was "a great thinker, practical not impulsive."
"He (Trump) was anti doing anything with Syria two years ago. Then a leader gasses their own people, women and children, at some point America is the global leader and the world's superpower has to come forward and act and they did with a lot of support of our allies and I think that's a great thing," he added.