Thread by @jseldin

NEW: "Not a lot of specific changes or progress...almost of #Russia's advances remain stalled" per senior US defense official

Russian forces still about 15km from #Kyiv city center, slowly trying to flow in forces behind advanced elements

Convoy still assessed to be stuck

#Chernihiv "isolated" but #Ukraine putting up stiff defense, stalling #Russia|n advances, per senior US defense official

#Ukraine keeping #Russia's eastern advance at bay - Ukrainians holding town of #Brovary, per senior US defense official

#Kharkiv - #Russia forces on the outskirts but "no apparent progress on the ground" by the Russians, per senior US defense official

Says fighting there still intense & Russians using more long-range fires

NEW: 50-60 #Russian vehicles now moving toward #Izyum, bypassing #Kharkiv, per senior US defense official

#Mariupol remains isolated by the #Russia|ns, #Ukraine forces still purring up resistance, per senior US defense official

No significant #Russian movement toward #Mykolaiv - "They've not made any significant movement" - or #Odesa, per official

"This was an air-launched cruise missile strike...more than a cpl dozen cruise missiles" vs military base in #Yavoriv, per senior US defense official

Says missiles were launched from inside #Russia

#Russia#China military aid? "We're going to watch that very very closely" per senior US defense official

"We have seen China basically give tacit approval to what Russia is doing" per official, echoing comments by other US officials that there would be consequences for #Beijing

US not involved in any training at #Yavoriv #Ukraine base since Florida National Guard troops moved out weeks ago, per senior US defense official

Adds no US persons in an official gvt capacity were there AND that strikes will not impact aid deliveries to Ukraine

#Yavoriv was not a transfer site for any US, Western aid shipments to #Ukraine, per senior US defense official

Additional security assistance shipments delivered to #Ukraine over the weekend - part of original $350 mill US package, per senior US defense official

Working on just authorized package of $200 mil in security aid, official adds

No signs #Russia|n forces from elsewhere in Russia being brought to #Ukraine AND "we have not seen any attempt to replenish his stocks from elsewhere" per senior US defense official

Since start of conflict, #Moscow has launched +900 missiles at #Ukraine targets but "the #Russia|ns still have a lot of capability left.. they have an awful lot remaining" per senior US defense official

#Ukraine's use of #Turkish drones - still effective vs #Russia, per senior US defense official

"We assess they [Ukraine] still have a significant majority of their inventory left" official adds

#Ukraine forces "have effectively struck at #Russia|n logistic & sustainment capabilities" per senior US defense official

"They've been quite creative here...deliberately tying to impede & prevent the Russians ability to sustain themselves"

#Ukraine's #Yavoriv base "wasn't being used for security assistance purposes" per senior US defense official

Repeats no US gvt personnel there but does not have visibility into whether US citizens may have been their on their own

Cruise missile attack on #Yavoriv launched from #Russia|n airspace, per senior US defense official

#Russia Increasing number of long-range fires vs key #Ukraine cities, per senior US defense official

"They continue to want to encricle #Kharkiv They continue to want to encircle & isolate #Mariupol ... #Kyiv"

Most areas where #Russia|n advances have stalled, especially in north - "It is largely bcs of the #Ukrainian resistance" per senior US defense official

A no-fly-zone "would not stop" all of the air activity over #Ukraine, per senior US defense official

Earlier, the official said that a no-fly-zone would bot have stopped the #Russia|n cruise missile attack vs #Yovariv

Corrected typo: A no-fly-zone "would not stop" all of the air activity over #Ukraine, per senior US defense official

Earlier, the official said that a no-fly-zone would bot have stopped the #Russia|n cruise missile attack vs #Yavoriv

NEW: No signs of #Russia backing down or backing off in #Ukraine

"We want to see a cease fire. We want to see the violence stop" per senior US defense official "What we're seeing is still a very concerted #Russia|n effort...w/ever more violence...long-range fires"

#Ukraine using #drones "quite skillfully" per senior US defense official

"They have a significant majority of their inventory available to them" official adds

"The #Russia|ns have not achieved air superiority over all of #Ukraine" per sr US defense official "It shifts literally hour to hour...it is still contested airspace"

"They [Russia] certainly have more assets available to them...flying many more times per day" per official

"Clearly the #Ukrainians are causing #Russia|n casualties, both killed in action & wounded" per senior US defense official

But official says no US info on ho many Russian units degraded or destroyed by #Ukraine

STILL no indications #Belarus forces preparing to enter the war in #Ukraine, per senior US defense official

Cruise missile attack on #Yavoriv "has not changed our posture" in #Poland, per senior US defense official