Is Biden falling in a Sunk Cost Trap in Ukraine?

This post was orginally made in December, 2023. At the time, political wrangling in Congress with a Republican-majority house was seeking to keep the purse strings drawn tight to the Biden administration's request for more aid to Ukraine.  Since the original post date to now, the situation in Ukraine has started to look more like the Grand Est region in France with minimal gains on both sides. While the the EU has since stepped up its committment to Ukraine's defense and a new Trump administration seemingly wary to provide large amounts of aid to the country, it now falls on President Trump to decide if any more bets will be placed in the battlefields of eastern Ukraine.