A major political showdown is unfolding in Washington as Senate Democrats threaten to block President Donald Trump's 2027 National Defense Authorization Act (NDAA), a defense policy bill worth more than $1.15 trillion.

Members of Congress are drawing lines in the sand on the sweeping defense legislation that requires some Democrats to cross the aisle.

"Simply throwing more money at an out-of-control military operation is not strategy," said Sen. Tammy Duckworth.

President Donald Trump notified Congress of the renewed conflict in a letter to Senate President pro tempore Chuck Grassley (R-IA).