The Big Question: Why does Trump keep mocking world leaders?

Will Trump's pressure tactics work on NATO, or will he push allies away? The President of the US has a track record of mocking his allies, usually straight to their faces. With the US's war in Iran accelerating, his vitriol towards those who have steadfastly refused to engage has increased, as he demands NATO members step up and help the US and Israel take the Strait of Hormuz. But will his pressure tactics work?