Undersea Cables Cut in Red Sea, Disrupting Internet

There has been concern about the cables being targeted in a Red Sea campaign by Yemen’s Houthi rebels, which the rebels describe as an effort to pressure Israel to end its war on Hamas in the Gaza Strip. But the Houthis have denied attacking the lines in the past.

Undersea cables are one of the backbones of the internet, along with satellite connections and land-based cables. Typically, internet service providers have multiple access points and reroute traffic if one fails, though it can slow down access for users.

The South East Asia–Middle East–Western Europe 4 cable is run by Tata Communications, part of the Indian conglomerate. The India-Middle East-Western Europe cable is run by another consortium overseen by Alcatel-Lucent.

Subsea cables can be cut by anchors dropped from ships, but can also be targeted in attacks. It can take weeks for repairs to be made as a ship and crew must locate themselves over the damaged cable.

The lines’ cut comes as Yemen’s Houthi rebels remain locked in a series of attacks targeting Israel over the Israel-Hamas war in the Gaza Strip. Israel has responded with airstrikes, including one that killed top leaders within the rebel movement.

From November 2023 to December 2024, the Houthis targeted more than 100 ships with missiles and drones over the Israel-Hamas war in the Gaza Strip. In their campaign so far, the Houthis have sunk four vessels and killed at least eight mariners.

The Iranian-backed Houthis stopped their attacks during a brief ceasefire in the war. They later became the target of an intense weekslong campaign of airstrikes ordered by U.S. President Donald Trump before he declared a ceasefire had been reached with the rebels. The Houthis sank two vessels in July, killing at least four on board, with others believed to be held by the rebels.