Operations at a Red Sea port in Yemen used for aid imports have fallen to about a quarter of its capacity, a UN official said on Tuesday, adding it was not certain that a Gaza ceasefire would end attacks between the Iran-backed Houthis and Israel.

Houthis have launched attacks on international shipping near Yemen since November 2023 in solidarity with Palestinians in the war between Israel and Hamas in the Gaza Strip. This has prompted Israel to strike port and energy facilities, including the Red Sea port of Hodeidah.

“(The) impact of airstrikes on Hodeidah Harbor, particularly in the last weeks, is very important,” Julien Harneis, UN resident and humanitarian coordinator in Yemen told a UN meeting in Geneva on Tuesday via videolink.

Four of the port’s five tugboats needed to escort the large ships bringing imports had sunk, while the fifth was damaged, he said, without attributing blame.

“The civilian crews who man them are obviously very hesitant. The capacity of the harbor is down to about a quarter,” he added, saying the port was used to transit a significant portion of imported aid.

Since a Gaza ceasefire agreement last week, Yemen’s Houthis have said they will limit their attacks on commercial vessels to Israel-linked ships, provided the Gaza ceasefire is fully implemented.

“We are hopeful that sanity will prevail and people will be focused on solutions and peace, but we are nonetheless prepared as a humanitarian community for various degradations,” said Harneis, adding that the agency had contingency plans.

The Iran-aligned Houthis have controlled most of Yemen, including the capital Sanaa, since seizing power during 2014 and early 2015.