US envoys Steve Witkoff and Jared Kushner are due to meet Ukrainian and European officials in Miami over two days to seek a unified proposal to end the war with Russia, according to US sources and Ukrainian President Volodymyr Zelensky. Talks are expected to cover security guarantees for Ukraine and a post-war prosperity plan, with national security advisers from the UK, France and Germany, plus NATO and EU officials, invited. The push comes after months of stalled US-led diplomacy and a Russian strike that killed 30 people on buses in Kramatorsk, and as Europeans voice concern over energy costs ahead of winter.