Israel and Hamas broadly agree in principle that an exchange of Israeli hostages for Palestinian prisoners could take place during a month-long ceasefire, but the framework plan is being held up by the two sides’ differences over how to bring a permanent end to the Gaza offensive, Reuters quotes three sources as saying.

The latest round of shuttle diplomacy started on Dec 28 and has narrowed disagreements about the length of an initial ceasefire to around 30 days, after Hamas had first proposed a pause of several months, said one of the sources, an official briefed on the negotiations.

However, Hamas has since refused to move forward with the plans until the future conditions of a permanent ceasefire are agreed, according to six sources.

While Israel has sought to negotiate one stage at a time, Hamas is seeking “a package deal” that agrees a permanent ceasefire before hostages are released during the initial phase, said one of the sources, a Palestinian official close to the mediation efforts. Israel and Hamas are speaking through the mediators, not talking directly.