US President Donald Trump, speaking at the country's biggest annual anti-abortion rally, accused Democrats on Friday of holding "radical and extreme" positions on abortion. "Unborn children have never had a stronger defender in the White House," the Republican president told thousands of anti-abortion campaigners attending the "March for Life" on the National Mall. "When it comes to abortion, Democrats have embraced the most radical and extreme positions," said Trump, the first president to address the annual rally in person. jca-cl/ec