Meta, which owns both social networks, has reportedly sent emails to moderators that explain the company is making "allowances for forms of political expression that would normally violate our rules".

The encouragement of violence against Russian civilians will continue to be prohibited - and posts calling for the president's death will be deleted if they contain other targets or discuss a location or method.

Fears Putin's forces could use chemical weapons - live updates on Ukraine war

Rules have also been relaxed surrounding posts about Belarusian President Alexander Lukashenko after Russia's invasion of Ukraine.

The temporary policy only applies to users in Armenia, Azerbaijan, Estonia, Georgia, Hungary, Latvia, Lithuania, Poland, Romania, Russia, Slovakia and Ukraine, according to the news agency's report.

An email seen by Reuters told moderators: "We are issuing a spirit-of-the-policy allowance to allow T1 violent speech that would otherwise be removed under the Hate Speech policy when: (a) targeting Russian soldiers, EXCEPT prisoners of war, or (b) targeting Russians where it's clear that the context is the Russian invasion of Ukraine (e.g., content mentions the invasion, self-defence, etc.)"

The message went on to explain that the rules are being changed because "Russian soldiers" is being used as a proxy for the military in relation to this invasion.

Meta said: "In light of the ongoing invasion of Ukraine, we made a temporary exception for those affected by war to express sentiments towards invading armed forces such as ''death to the Russian invaders'.

"These are temporary measures designed to preserve voice and expression for people who are facing invasion. As always, we are prohibiting calls for violence against Russians outside of the narrow context of the current invasion."

Read more:
How are big tech companies responding to the invasion of Ukraine?

Key developments:
• A US defence official says Russian soldiers are edging closer to Kyiv
• Satellite images suggest a large convoy of Russian troops has dispersed and redeployed
• Boris Johnson has told Sky News it has been "deeply upsetting" to reject calls for a no-fly zone over Ukraine
• The UN Security Council will meet today to discuss Russia's claims that the US and Ukraine are developing biological weapons - despite firm denials from both countries
• Ukraine has told the UN's nuclear watchdog that all contact with the Chernobyl power plant has been lost

Russia tightens access on social networks

Last week, Russia said it was banning Facebook after the social network began restricting access to certain state media outlets.

Social networks including Facebook and Twitter have blocked RT and Sputnik in Europe.

On Thursday, both sites removed posts from the Russian Embassy in the UK about the bombing of a children's hospital in Mariupol because they broke rules that prohibit denying violent events.

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According to Ukrainian President Volodymyr Zelenskyy, three people - including a child - were killed in Wednesday's airstrike, which also hit a maternity unit.

One of the posts from the Russian Embassy shared images with a red label that branded them as "fake" - and went on to claim that the maternity unit was non-operational and was being used by Ukrainian soldiers at the time.

Twitter has responded to Russia's blocks by launching a privacy-protected version of its site - known as an "onion service" - that can be accessed via the dark web.

Read more:

What happened on day 15 of the Ukraine invasion
Russia is edging closer to Kyiv, US defence official says
How will this end? Your questions answered
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