State Department says Ukraine ready to accept 30-day ceasefire deal: 'Ball is now in Russia's court'

State Department spokesperson Tammy Bruce said Monday that "the ball is now in Russia's court" to accept a U.S.-proposed ceasefire deal that Ukraine agreed to last week.

While a ceasefire appears imminent, Russia and Ukraine still need to resolve key disagreements before finalizing the deal.

These include negotiations related to Ukraine's entrance into NATO - which Russia has said is a non-starter - territorial integrity disputes and security guarantees, such as whether NATO peacekeeping troops will be allowed in Ukraine to maintain the ceasefire. Potential prisoner swaps will also need to be ironed out between the two warring nations.

Trump has also signaled that control of certain land and power plants in Ukraine would also be part of the negotiations.