Meanwhile, President Donald Trump has told a White House event the US is striking Iranian drone and missile systems "every single hour".

The beleaguered Iranian regime, with very few international allies, has been counting on Moscow's support amid the ongoing US-Israeli strikes, but so far it has been left deeply disappointed.

The government is currently considering an Australian-style social media ban for under-16s in the UK, and has highlighted infinite scrolling as a feature which "drives addictive or compulsive use".