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.
US President Donald Trump said on Tuesday the US was making progress in its efforts to negotiate an end to war with Iran, including winning an important concession from Tehran, while media outlets reported Washington had sent a 15-point settlement proposal.
Kuwait's Directorate General of Civil Aviation (DGCA) has announced on Wednesday that a drone targeted a fuel tank at Kuwait International Airport, which led to a fire breaking out on the site.
The Pentagon is expected to send thousands of soldiers from the army's elite 82nd Airborne Division to the Middle East, according to reports on Tuesday, adding to the massive military buildup even as the Trump administration seeks talks with Iran.
The National Transportation Safety Board said on Tuesday that a system which would have allowed a New York airport controller to track movement of aircraft and vehicles did not alert during a Sunday night fatal collision between an Air Canada commercial jet and a truck that killed two pilots.
A rare Russian daytime drone attack on Ukraine killed three people, wounded several dozen and set a building in the historic centre of the western city of Lviv aflame on Tuesday, officials said, following an overnight bombardment that killed five.