US President Donald Trump lashed out at NATO allies Wednesday at a summit in Ankara, as the fallout from his war with Iran threatened to overshadow the key gathering. Trump declared the Iran ceasefire was "over", then took aim at NATO allies who failed to back his campaign against Tehran. And he insisted he still wanted Greenland, calling European resistance to his stance a "big problem". Angela Diffley takes a look at some of the main takeaways from the US president's remarks.