Smoke and question marks still hang over the devastated Gaza Strip one year after Hamas' Oct. 7 attack touched off a regional firestorm.

The United States on Monday imposed sanctions on an international Hamas fundraising network, accusing it of playing a critical role in external fundraising for the Palestinian militant group, in action marking the first anniversary of the Gaza war.

Vigils, commemorations and acts of remembrance were planned across the world on Monday to mark one year since the Oct. 7 Hamas attack on Israel as world leaders called for an end to antisemitism