Travellers to Iran from Europe will be required to self-quarantine for two weeks after testing negative upon arrival, a health official said on Saturday.
Travellers from other regions, including neighbouring countries, will have to have tested negative before arrival in the country, Alireza Raisi, spokesman for the national coronavirus task force, said on state TV.
Raisi said travellers arriving from Europe should be holding negative test results, will be tested again and will have to self-quarantine even if their test is negative, state media reported.
Previously, people coming from Europe were only required to test negative.
He did not say when exactly the new measures will go into effect, saying only "from now on."
Meanwhile, health officials said the Iranian-manufactured Barekat vaccine was found effective against the highly contagious coronavirus variant that emerged in Britain.
Russia launched another prolonged drone attack on Ukraine, killing one person and damaging swathes of Kyiv as well as striking a maternity ward in the southern port of Odesa, regional officials said early on Tuesday.
The US military will temporarily deploy about 700 Marines to Los Angeles until more National Guard troops can arrive on the fourth day of street protests over US President Trump's immigration policies.
Russia and Ukraine exchanged prisoners of war under the age of 25 on Monday in emotional homecoming scenes, the first step in a series of planned prisoner swaps that could become the biggest of the war so far.
British novelist Frederick Forsyth, who authored best-selling thrillers such as 'The Day of the Jackal' and 'The Dogs of War', has died aged 86, his publisher said.