Time is running short for lawmakers to provide aid to Ukraine as talks among Senate negotiators over a possible border security package are faltering.

Republicans say taking action on the border is necessary to unlock money for Kyiv, and the White House said Monday it would run out of money for Ukraine by the end of the year without congressional action.

But talks broke down in recent days as negotiators struggled to advance the ball, according to Democrats, further complicating the path forward for lawmakers to greenlight aid to help Ukraine combat Russia in the coming months.