"Space Force" would aim to ensure American supremacy in space, although its development may be beyond the president's control. "The essence of the American character is to explore new horizons and to tame new frontiers," President Trump said.
President Trump is expected to relax regulations on US-built drones to help the industry compete on a global scale. While US drones are the gold standard for quality and technology, strict sales regulations have severely limited their markets.
Russian hackers attacked at least 87 people working on advanced US defense technology including drones and rockets, according to an Associated Press investigation. The hackers, identified by the moniker 'Fancy Bear,' largely targeted personal Gmail accounts.
Following Baghdad's declaration of victory over ISIS last year, American troops have begun to filter out of Iraq. The move comes with the release of the Pentagon's National Defense Strategy that cited China and Russia as growing national security priorities.
Three federal courts have ruled against President Trump's demand to bar transgender people from the military. Enlistment starts on Jan. 1, 2018.
A standing guard soldier gets his sweat wiped off by his chief at the Mamayev Kurgan World War II memorial complex in Volgograd, Russia, on June 21.
In an effort to eradicate terrorism and stabilize Afghanistan, the US and India are working out a deal to expand India's navy to shore up surveillance in the Indian Ocean, among other initiatives.
Pentagon continues its debate over how broadly to enforce a ban on transgender troops' service ordered by President Trump.
Defense Secretary Mattis's trip to Minot Air Force Base, while it reenforced the presence and strength of the US nuclear arsenal, was not intended to trigger a response from North Korea. But his visit still sent a clear message: An attack on the US is a mistake.
Russian President Vladimir Putin warned US officials not to send defensive weapons to Ukraine, something US Defense Secretary Jim Mattis has openly considered.
President Trump has said that "all options are on the table" after a North Korean ballistic missile, designed to carry a nuclear payload, was fired over Japan and into the northern Pacific Ocean.
United States Secretary of Defense Jim Mattis says ISIS militants, routed from a stronghold in Iraq, are now caught between the Syria-Iraq border where converging forces will be able to target them.