Israel and Hamas agreed to a ceasefire deal, mediators announced Wednesday, pausing a devastating 15-month war in the Gaza Strip and raising the possibility of winding down the the deadliest and most destructive fighting between the bitter enemies.

Qatari and Hamas officials say a last-minute dispute in ceasefire talks between Israel and Hamas has been resolved. Israel announced late Wednesday that Hamas had tried to change agreed-upon understandings for security arrangements along Gaza’s border with Egypt. It strongly rejected the proposals.