Iran - Anti-government protests have continued in Iran for a third day, with reports of demonstrations in many cities despite warnings from authorities.
At Tehran University, protesters called for Supreme Leader Ayatollah Ali Khamenei to step down and there were clashes with police.
Demonstrators ignored the interior ministers warning that citizens should avoid "illegal gatherings".
Meanwhile, thousands of pro-government demonstrators turned out for rallies.
These official rallies were organised in advance of the anti-government protests, to mark the eighth anniversary of the suppression of major street protests in 2009.
The current protests began in the north-east on Thursday over living standards and by Friday had spread to several major cities.
Media captionIranian state TV showed crowds of government supporters in the capital, Tehran
Interior Minister Abdolreza Rahmani-Fazli urged people not to take part "as they will create problems for themselves and other citizens", but videos posted online suggest that protests were held on Saturday in at least nine cities across the country.
The Iranian authorities are blaming anti-revolutionaries and agents of foreign powers for the outbreak of protests. The communications minister has also urged Telegram, a popular mobile messaging app in Iran, to stop "promoting violence".
In the US, the Trump administration warned Iran overnight that the world was watching its response. Irans foreign ministry called the comments "opportunistic and deceitful".