DOHA, Qatar (AP) – — A ceasefire agreement between Israel and Hamas has hit a last-minute snag, with both sides at odds over the Philadelphia axis, a piece of land separating the Gaza Strip and Egypt, according to an Israeli source with direct knowledge of the negotiations.

“The Israeli negotiating team was recently informed that the Hamas terrorist organization decided at the last minute to make new demands – this time regarding the Philadelphia axis, in contrast to the maps that have already been approved by the cabinet and American mediators. Israel strongly opposes any changes to these maps,” the Israeli source told ABC News.

The Israel Defense Forces continues its intense airstrike and ground campaigns in Gaza, particularly in the north of the strip. A latest round of peace talks to end the 15-month-old war has resumed in Qatar, with high-level delegations traveling to Doha.

Meanwhile, the November ceasefire in Lebanon is holding despite ongoing Israeli airstrikes on Hezbollah targets, which Israeli officials say are responses to ceasefire violations by the Iranian-backed militant group. Israeli forces also remain active inside the Syrian border region as victorious rebels there build a transitional government.

Tensions remain high between Israel and Iran after tit-for-tat long-range strikes in recent months and threats of further military action from both sides. The IDF and the Yemeni Houthis also continue to exchange attacks.

ABC News contributed to this report.