US Involvement Hostage Situations Hamas Israel-Hamas Conflict Mediation Efforts Ukraine-Russia Conflict U.S.-Russia Relations Ukraine Conflict Russia-Ukraine Conflict US-Russia Relations United States Middle East Conflict U.S. Involvement Mediators Middle East Peace Process US-Israel Relations U.S.-Ukraine Relations Lebanon Qatar's Role Middle East Conflict Resolution Qatar Israel-Hamas Relations Gaza Conflict Mediating Countries European Leaders Israel Cairo Talks Ukraine-Russia Relations Hostage Negotiations Conflict Resolution Israeli-Palestinian Conflict Hamas-Israel Conflict Hostage Release Ukraine US Mediation Western Alliances USA-Ukraine Relations US-Ukraine Relations Peace Proposals Trump-Putin Call Conditions for Peace Hamas-Israel Negotiations International Aid Putin-Trump Relations Truce Efforts Regional Stability Russia-Ukraine War Ukraine War Egypt and Qatar Hamas Delegation in Cairo Egypt Mediation Military Actions Egypt and Qatar Mediation Egyptian-Palestinian Relations Egyptian Mediation Arms Supply Hostage Deal US Relations Middle East United Nations Hostage Situation US Proposal for Truce in Gaza US Proposal for Ceasefire in Gaza U.N. Security Council Resolution Ukraine Conflict Resolution Weapon Shipments Hamas Proposal US-backed Proposal Gaza-Israel Conflict Qatar Talks Involvement of Other Nations Biden Administration's Proposal Global Reactions Military Alliances International Pressure Israel's Military Actions Lebanon Conflict US-led Initiatives Gaza Strip Gaza Humanitarian Aid US Turkey's Role Peace Talks Peace Agreements US Proposal Israel-Hezbollah Relations Regional Cooperation Biden Administration Mediation USA-Russia Relations London Meeting