Fox News correspondent Alex Hogan gives an update on Russia and Ukraine's Black Sea deal and what it means for the United States on 'Special Report.'

Zelenskyy said Ukraine had agreed with U.S. negotiators “that a ceasefire for energy infrastructure can start today.” But, he warned, any strikes on Ukraine’s energy facilities by Moscow would draw “strong retaliation.

Russia launched an overnight drone attack on the Ukrainian port of Mykolaiv that provides the country with access to the Black Sea and struck Kryvyi Rih in what Ukrainian officials said on Wednesday was the war's biggest drone attack on the city.

U.S. President Donald Trump said he thinks Russia could be deliberately frustrating his efforts to broker an agreement to end the fighting in Ukraine.

Russia and Ukraine agreed Tuesday to halt military strikes in the Black Sea, achieving a tentative first step towards peace in talks with the United States held in Saudi Arabia.