Dr. Rebecca Grant, a national security and military analyst, joined 'Fox & Friends First' to discuss the latest on the Black Sea ceasefire with Russia and Ukraine, a Palestinian protest against Hamas and the second family's trip to Greenland.

The success of an apparent agreement between Ukraine and Russia to pause naval and energy infrastructure attacks will depend on Moscow, Zelenskyy said.

The White House said Tuesday that Russia and Ukraine had agreed to a ceasefire in the Black Sea and to implement a ban on attacks on energy facilities by the two neighbors, an apparent breakthrough after American negotiators held separate talks with both countries.

Democratic lawmakers heaped criticism on the administration for handling highly sensitive information carelessly.

President Donald Trump addressed questions Tuesday about his national security officials using a group chat app that included a journalist to discuss attack plans in Yemen. Hearst TV was in the room as the president met with his ambassadors and took questions.