President Donald Trump has suggested the U.S. will restart nuclear weapons testing, a move that upends decades of American policy

Trump's announcement breaks with more than three decades of policy. The last time the United States tested a nuclear weapon was in 1992.

On Oct 1, the first day of the government shutdown, the U.S. Department of Energy said it was canceling more than $7.5 billion in energy projects to save taxpayers' money. In termination letters, the agency told several grantees that the projects no longer align with the Trump administration’s pro-energy, especially pro-fossil fuel, approach.

Trump announced the US will resume testing nuclear weapons for the first time in three decades, sparking fears of a new nuclear race