A major U.S. national-security bill is at risk of spectacular collapse. What happens next?

A major U.S. national-security bill is at risk of a spectacular collapse Wednesday, leaving fragments of unfinished business strewn across several continents. Ukraine, Israel, Taiwan and the U.S. border — they’re all in the bill Republicans are ditching. Here’s how we got here and what’s likely to happen next.

CBC | World News