Ukraine's President Volodymyr Zelenskyy has made his third trip to Washington DC in less than a year on a whistle-stop tour of the US and Europe, pleading his case for more aid, in particular American military aid. But the prospect of success seems increasingly in doubt as the package remains stalled in Congress and is facing pushback from Republicans who are arguing that more money needs to be spent on the US-Mexico border. This is a crucial moment for Ukraine following its failed counteroffensive against Russian forces. On the Sky News Daily Niall Paterson talks to Sky's defence and security analyst, Professor Michael Clarke, about the stalemate and what happens next. Producer: Alex Edden Interviews Producer: Melissa Tutesigensi Promotion Producer: Jada-Kai Meosa John Editor: Philly Beaumont