Secretary of State Marco Rubio will lead a newly formed joint commission that will work on forging a security guarantees proposal for Ukraine, an administration official told The Hill’s sister network NewsNation on Tuesday.

The commission will be made up of U.S., Ukrainian, European and NATO officials.

The agreement for the commission came during Monday’s White House meeting between President Trump and the seven European leaders who visited Washington.

The news of Rubio as the commission’s head was first reported by The Wall Street Journal. The outlet reported Monday night that Ukraine’s security assurances will be made up of four parts: air defense, a military presence, tracking the cessation of fighting and armaments, citing European officials familiar with the matter.

Rubio, who is

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