Trump becomes 45th U.S. President

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As US President Donald Trump assumes power, we look at the hurdles ahead for his economic plans, plus geopolitical and environmental implications. Meanwhile, Gambia's chief of defence forces pledges his allegiance to the country's new president. It's a major shift in the power battle as efforts continue to encourage defeated Yahya Jammeh to cede power. We address the long term impact of the stand-off. (Picture: Donald Trump is sworn in as the 45th President of the United States - Picture Credit: Drew Angerer/Getty Images)