"Six years have passed since I last stood in this grand hall and addressed a world that was prosperous and at peace in my first term. Since that day, the guns of war have shattered the peace I forged on two continents, an era of calm and stability gave way to one of the great crises of our time," Trump said as he began his remarks.

In a wide-ranging speech, Trump says Europe is "in serious trouble" because of migration, calls climate change a "con job", and criticises the UN itself.