U.S. Secretary of State Marco Rubio visited Israel on October 24 and stressed the need for any international security force deployed into Gaza as part of a ceasefire agreement to come from countries that Israel finds “comfortable,” adding that any future governance of Gaza remains up for discussion, though any agreement must exclude Hamas. Meanwhile, any possible role for Palestinian Authority remains unknown and will be decided jointly with Israel and international partners, according to Reuters +1.
Background on the Ceasefire Agreement

The ceasefire agreement, brokered by former U.S. President Donald Trump, seeks to end Israel and Hamas’ conflict and establish an international stabilization force which will oversee demilitarization, ensure security and facilitate reconstruction efforts within Gaza. As part of this accord, an international stabilization force’s composition and mandate are currently subject to ongoing discussions among involved parties on Wikipedia.
Rubio’s Remarks Regarding Security Force Composition

Secretary Rubio’s remarks underline the significance of Israeli approval when selecting countries to contribute to an international security force. While many nations have expressed interest, its final composition will ultimately depend on which ones meet Israel’s approval and meet post-conflict stabilization efforts as efficiently as possible, according to Rubio. This approach underscores U.S. commitments towards meeting Israeli security concerns through post-conflict stabilization efforts Reuters (AFP, IDN).
Hamas and UNRWA should both be excluded.

Rubio reiterated the U.S. position by declaring Hamas will no longer be allowed to govern Gaza in the future and disqualified UNRWA as any future role, labelling it a subsidiary of Hamas and reflecting concerns regarding any possible links with it, according to The Guardian +1.
Uncertainty Surrounds the Role of the Palestinian Authority

Rubio mentioned ongoing talks regarding a potential involvement of the Palestinian Authority (PA) in Gaza governance, but noted that any future role for PA must be approved by Israel and its international partners to ensure Gaza does not serve as a base for attacks against it (The Guardian).
International Stabilization Force and Civil-Military Coordination Center.

ISF stands for International Stabilization Force and was created to provide security and aid reconstruction of Gaza. To coordinate its efforts, a Civil-Military Coordination Center was set up in Kiryat Gat, Israel – comprising around 200 U.S. personnel as well as representatives from other countries working together on ceasefire implementation and humanitarian relief – namely Wikipedia + 1.
Conclusion
Secretary Rubio’s statements demonstrate the U.S. commitment to an end-of-conflict Gaza that guarantees Israel’s security while excluding Hamas and UNRWA from governance roles. Discussions surrounding an international security force composition as well as future governance structure illustrates the challenges associated with creating lasting peace in Gaza; with negotiations continuing, involvement from countries who are friendly toward Israel will play a crucial role in shaping its post-conflict landscape.