US presidential hopefuls faced a televised defence policy grilling on Wednesday, with Republican Donald Trump reiterating his praise for Russia's Vladimir Putin and Democrat Hillary Clinton responding to more questions about her email server.

US - Clinton and Trump head to head, grilled on defence policy in separate televised forums

US presidential hopefuls faced a televised defence policy grilling on Wednesday, with Republican Donald Trump reiterating his praise for Russia's Vladimir Putin and Democrat Hillary Clinton responding to more questions about her email server.