You may be confused over Taylor , who in 2015 was in private practice..

Most of you confusion is a result of trump lies.. some via his yes men such as Giuliani..

https://www.atlanticcouncil.org/blogs/ukrainealert/lethal-weapons-to-ukraine-a-primer/

During the Obama administration, direct commercial sales of small shipments of lethal arms to Ukraine were reviewed, approved, and licensed on a case-by-case basis by the Department of State in consultation with the Department of Defense. The US government authorized nearly $27 million of commercial defense articles and services to Ukraine in 2016 and about $68 million in 2015, portions of which are classified as lethal weaponry.

It is through this process that US-made lethal weapons arrived near Ukraine’s frontlines. According to a recent Digital Forensic Research Lab investigation, the Texas-based company AirTronic shipped 100 PSRL-1 (Precision Shoulder-Fired Rocket Launcher) systems to the Ukrainian state-run Spetstechnoexport in April 2017. Some of these rocket-propelled grenade launchers appeared during a training session of the Azov Battalion, a regiment of fighters that has been integrated into the National Guard, based near Mariupol in the summer of 2017. These weapons were reportedly used only in training exercises and likely returned to arms depots.

These direct commercial sales coupled with the US provision of advanced non-lethal weaponry, particularly counter-battery radar systems, were already in motion during the Obama administration. By comparison, Canada only recently approved a government decree permitting Canadian defense contractors on a case-by-case basis to export lethal arms to Ukraine. However, the recent raft of US and Canadian announcements created a false impression that these were the first-ever shipments of lethal weapons from the United States to Ukraine.