Key developments on Dec. 7: Senate GOP blocks Ukraine funding bill from advancingStudy: Aid for Ukraine drops to lowest level since January 2022White House announces plans to strengthen defense cooperation with UkraineReuters: Ukraine requests US air defense systems, fighter jetsISW: Russia makes limited advance in Avdiivka’s industrial zoneRussian attacks kill 1, injure 11 over past dayRepublicans in the U.S. Senate blocked a supplemental funding bill that included aid for Ukraine, Israel, and Taiwan in a procedural vote held Dec. 6. The funding package includes $61 billion in military and hu…