Group 1 - The United States and Europe are developing a security assurance plan for Ukraine, but Russia insists that any genuine security guarantees must involve its participation [1][5] - Trump stated that Ukraine will not be allowed to join NATO, but the U.S. will provide "air support" instead of ground troops [2][3] - European countries are advancing plans to send troops to Ukraine, with approximately 10 nations prepared to contribute [4] Group 2 - The U.S. is considering various forms of air support, which may include the provision of Patriot missile defense systems and F-16 fighter jets [3] - A committee has been established by the U.S., EU, and Ukraine to draft security assurance proposals, led by U.S. Secretary of State Rubio [3] - The European Council President stated that security assurance terms will be finalized in the coming days, with NATO military leaders set to discuss the situation on the 20th [4]