Key Takeaways from the ISW : US and Ukrainian officials held another round of peace negotiations in Miami, Florida on January 17. European countries appear to be cracking down against oil tankers associated with the shadow fleets of Russia and its allies. NATO jets scrambled in response to another Russian military aircraft flight close to NATO airspace. Ukrainian forces recently advanced near Kupyansk and Pokrovsk. JOIN US ON TELEGRAM Follow our coverage of the war on the @Kyivpost_official .