President Volodymyr Zelensky said the system, which Ukraine uses to guide drones, was being throttled over Russian-occupied territory. SpaceX, its developer, has denied the claim.

The disruptions offer the latest example of the cascading problems that can erupt when so many communications and technology platforms depend on the same provider.

Sergei Zavorotny, previously an aide to Ukrainian Prime Minister Mykola Azarov, became a pro-Kremlin commentator in Russia.

South Sudan has again postponed its first national elections since independence in 2011, moving polling from December to February.

US Air Force personnel at the RAF Lakenheath base in Britain responded to “suspected unauthorized drone activity” on Friday evening, although no personnel, aircraft or infrastructure were affected, a US Air Force spokesperson said.

European leaders including Giorgia Meloni, Italy's prime minister, left, and Ursula von der Leyen, president of the European Commission, second left, gather for the 'family photo'

The U.S. military said it intercepted two Iranian attack drones headed toward Bahrain, as Iran's Revolutionary Guard claimed it struck a U.S. early warning radar system in the kingdom. Iran also said a tanker struck a naval mine while attempting to sail through the Strait of Hormuz.

While the leaders gathering for joint talks will mark a singular moment, analysts say expectations are low that the talks will lead to major breakthroughs and say they will be heavier in symbolism than substance.