Washington (CNN) Elizabeth Warren has secured a spot on the Senate Armed Services Committee -- a role that will give the liberal firebrand from Massachusetts a major voice on national security.

New Jersey Sen. Cory Booker, meanwhile, has landed a position on the Foreign Relations Committee -- another prime position for the former Newark mayor whose background is also focused on domestic policy.

The appointments are sure to fuel speculation that Warren and Booker are looking to broaden their issue portfolios to add foreign policy experience ahead of potential runs for the Democratic presidential nomination in 2020.

The moves thrust both Warren and Booker into the center of investigations into the CIA's finding that Russia hacked Democratic operatives in an effort to help Republican Donald Trump win the 2016 election.

Warren's three brothers served in the military, she said in a statement issued announcing the assignment. And Massachusetts is home to prominent defense contractors.

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