President Biden's nominee to lead the Space Force said Tuesday that space is a "war-fighting domain" and argued that China is America's greatest threat in the region.

Lt. Gen. Bradley Saltzman appeared before the Senate Armed Services Committee as part of his nomination process Tuesday. Senators pressed him on what threats Space Force faced and what his goals were for the branch moving forward.

"The most immediate threat, in my opinion, is the pace with which our strategic challengers, first and foremost, the Chinese, are aggressively pursuing capabilities that can disrupt, degrade and ultimately even destroy our satellite capabilities and disrupt our ground infrastructure," Saltzman told lawmakers.

"It is one of my earliest priorities to make sure that we're on track to build and field effective capabilities and then train the guardians to operate in a contested domain so that we can counter this activity by our strategic competitors," he added.

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Lt. Gen. Bradley Saltzman answers questions before the Senate Armed Services Committee.

Lt. Gen. Bradley Saltzman appears before Congress.

Sen. Tom Cotton, R-AR, later pressed Saltzman on whether he believed space was itself a war-fighting domain rather than a domain where the U.S. placed assets that assist warfare in other domains like air, land and sea.

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"You mean that space itself could be a war-fighting domain, correct?" Cotton asked.

"I do," Saltzman responded.

"OK, so the timeless principles of war that have stood the test of time from Alexander to Washington to Napoleon to Grant would apply in space just like they apply here on Earth. Right?" Cotton pressed.

"I agree," Saltzman confirmed.

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Space Force is the newest branch of the U.S. military and was founded under former President Trump in 2019.