Jack Detsch @JackDetsch
Jack Detsch @JackDetsch
NEW: U.S. is still in talks with allies and partners about providing Ukraine with long-range air defenses, such as the Russian-made S-300 system: senior U.S. defense official.
NEW: Ukraine still has the majority of long-range air defenses available and airspace remains "contested" more than a month after Russian invasion: senior U.S. defense official
Russian surface to air missiles cover most of Ukraine, but Russian pilots are mostly fearful of going into its air
NEW: Russian long-range artillery and air attacks are having a "devastating" impact on Ukraine's besieged city of Mariupol: senior US defense official
Mariupol has been under siege for a month, since day 4 of Russia's invasion of Ukraine. Local officials say 5,000 have died.
Dan Lamothe @DanLamothe
Pentagon also was asked for an assessment of how many people, including civilians, have been killed in Mariupol. Belief is that it is likely thousands.
Senior defense official declines to disclose a number, saying the Pentagon has low confidence in their estimates.