Donald Trump is risking further inflaming matters in Iran, urging anti-government demonstrators to keep protesting, adding "help is on its way". 

The US President has raised the possibility of intervention in Iran, and his national security team meets today to discuss its options. 

Thousands are feared dead, as the country's regime violently cracks down on anti-government protests. 

US Correspondent Richard Arnold told Andrew Dickens military operations are being considered, including a strike on Iran’s missile programme, or strikes against security services or directly against Iranian leadership. 

He says Iran is publicly threatening retaliation for any military action, which the White House has called laughable. 

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