Iran has threatened to strike American bases in the region if it is attacked by Washington.

DUBAI, Jan 17 (Reuters) - Iran's Supreme Leader Ayatollah Ali Khamenei on Saturday blamed President Donald Trump for weeks of demonstrations that rights groups said have led to more than 3,000 deaths.

A U.S. based human rights group estimates about 3,000 protestors have been killed by Iranian security forces but activists suggest that number could be higher.