Trump stresses US nuclear capabalities

President Donald Trump is stressing the United States' nuclear capabilities, saying "there will never be a time that we are not the most powerful nation in the world!"

On Twitter Wednesday, Trump said he had pushed to "renovate and modernize our nuclear arsenal." He then added: "Hopefully we will never have to use this power, but there will never be a time that we are not the most powerful nation in the world!"

The comments come as Trump and North Korea traded escalating threats. Trump's heated rhetoric comes as his secretary of state seeks to downplay the words.