Biden-Putin phone call ends after 50 minutes.
Kremlin says 'pleased' with Putin-Biden call.
Kremlin aide says U.S. side showed willingness to tackle core Russian concerns.
Earlier today, RAF RC-135W ZZ665 from RAF Mildenhall, UK, USAF E-8C 01-2005 from Ramstein AB, DE, and US Army ARTEMIS N488CR from Mihail Kogălniceanu, RO were tracked flying over the Black Sea and Ukraine. This map shows an estimate of the effective range of each platform.
REDEYE6 is E-8C J-STARS battlefield surveillance aircraft 01-2005 #AE1499, flying a nearly identical search pattern as it did on DEC 27th. Primarily watching Luhansk & Donetsk regions.