Donald Trump: Dead soldier's mother 'had nothing to say'

Republican presidential hopeful Donald Trump has attracted outrage by mocking a dead US Muslim soldier's mother.

Ghazala Khan stood silently next to her husband as he attacked Mr Trump in an emotional speech to the Democratic National Convention on Thursday.

In an interview with ABC News' George Stephanopoulos, Mr Trump said she "had nothing to say" and may not have been allowed to speak.