The United States announced on Wednesday it had released its last tranche of military aid for Ukraine. The White House approved $250 million (€225 million) in support, but more will need fresh approval from Congress. Negotiations between Republicans and Democrats have stalled. Ukraine has warned it cannot fight Russia without further support from the West. The Kremlin, for its part, has banked on waning Western aid as key to an eventual win in Ukraine. “It is imperative that Congress act as soon as possible to advance our national security interests by helping Ukraine defend itself,” US Secret…