WhatsApp said Russia was trying to block its services because the social media messaging app owned by Meta Platforms offered people's right to secure communication, and vowed to continue trying to make encrypted services available in Russia.
Russia has started restricting some Telegram and WhatsApp calls, accusing the foreign-owned platforms of failing to share information with law enforcement in fraud and terrorism cases.
"WhatsApp is private, end-to-end encrypted, and defies government attempts to violate people's right to secure communication, which is why Russia is trying to block it from over 100 million Russian people," WhatsApp said in a statement. "We will keep doing all we can to make end-to-end encrypted communication available to people everywhere, including in Russia."
Telegram said its moderators were using AI tools to monitor public parts of the platform to remove millions of malicious messages every day.
"Telegram actively combats harmful use of its platform including calls for sabotage or violence and fraud," Telegram said in a statement.
Russia has clashed with foreign tech platforms for several years over content and data storage in a simmering dispute that intensified after Moscow's sent its army into Ukraine in February 2022, with critics saying that Russia is trying to expand its control over the country's internet space.
President Donald Trump said on Friday the US was getting very close to meeting its objectives as it considers winding down its military efforts in the Iran war and called on countries that use the Strait of Hormuz to guard and police it "as necessary".
Iran is ready to let Japanese-related vessels pass through the Strait of Hormuz, a vital artery for global oil supplies, Kyodo news has reported, citing Iranian Foreign Minister Abbas Araqchi.
The Israeli military said early on Saturday it was striking Hezbollah targets in Beirut, after issuing an evacuation warning for seven neighbourhoods in the southern suburbs of the Lebanese capital.
The US military is deploying thousands of Marines to the Middle East, officials told Reuters on Friday, as President Donald Trump accused NATO allies of cowardice over their reluctance to send forces to help open the Strait of Hormuz.
A fire that broke out around lunchtime on Friday at a car parts factory in the South Korean city of Daejeon on Friday, has left 10 people dead, 25 seriously injured and 34 with minor injuries, the country's safety ministry said on Saturday.