As Trump argues "we must have American dominance in space," Russia and China are attempting to stake their own claim to the final frontier.
The U.S.-led NATO Western military alliance and Russia accused each other of fueling the Cold War–like crisis across Europe.
U.S. air presence over the Black Sea angered Moscow.
Moscow is studying the remains of Tomahawk rockets to exploit their weaknesses.
"Listen to Russian President Vladimir Putin and trust him," the Kremlin's spokesman told journalists after dismissing a CNBC report.
India has equipped its INS Arihant nuclear submarine with K-15 Sagarika missiles capable of hitting targets 435 miles away.
President Vladimir Putin has ordered over a dozen regiments to finish upgrading their Topol missile systems this year, among other military updates.
A New York Times report claims U.S. Green Berets are covertly destroying Houthi rebel missile sites in Yemen on behalf of Saudi Arabia.
The Naval Strike Missile is a top candidate for the Navy's littoral combat ships, which critics have said may not stand up to Russian and Chinese power.
The Syrian Observatory for Human Rights believed Israel was likely responsible for the attack.
Naples Mayor Luigi de Magistris said his "City of Peace" was no place for nuclear weapons or nuclear-powered vessels.
The world's top two military powers may be on a collision course in Syria.
Defense Secretary James Mattis is heading to the White House to show President Donald Trump his options for attacking Syria.
The Pentagon has denied responsibility for the attack.
Despite peace talks on the Korean Peninsula, Russia says the U.S. is risking a war with military exercises and "maximum pressure" against Kim Jong Un.
The RS-28 Sarmat could be seen taking flight as both the Russian and U.S. leaders discussed an "arms race."
Vladimir Putin said the RS-28 Sarmat has no range limits and "is untroubled by even the most advanced missile defense systems."
The tests come as Russian President Vladimir Putin revealed new nuclear missiles and Moscow's relationship with the West took another major blow.
Russia has chosen the names of three advanced weapons recently revealed by Putin, but what do they mean?
Russia's so-called Satan missile has been shrouded in propaganda and secrecy, but Putin made it the centerpiece of his last state address.
The country's armed forces have rallied 8,000 troops for the drills across 19 training ranges, including two breakaway regions in neighboring Georgia.
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Once found only in works of fiction, Russia's deputy defense minister said such devices were now a very real and necessary tool of modern warfare.
Putin spent well over half an hour talking about futuristic Russian weapons but some noticed the footage they were shown was quite old.