Russia's so-called Satan missile has been shrouded in propaganda and secrecy, but Putin made it the centerpiece of his last state address.
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.
The anti-missile system is part of the capital's Cold War-era line of defense, which has 68 nuclear tipped rockets ready to blast incoming strikes from the sky.
The U.S. is currently the largest financial contributor to U.N. peacekeeping operations, behind a quarter of the U.N.'s 2017 budget.
Former Defense Secretary Chuck Hagel said the U.S. military "can't fix the problems in Afghanistan" and Russia "really holds the cards" in Syria.
The White House said Trump had told his Turkish counterpart in a phone call to "limit its military actions."
Trump apparently urged Turkey to "limit its military actions" in northern Syria. Ankara says it's a lie.
General Sir Nick Carter warned the British government about further cuts to its armed forces.
The move follows a similar change to the National Security Strategy released by Trump in December.
The Kremlin has expressed concern over the missile shield the U.S. provides in Eastern Europe, near Russia's western border.
The EU cannot afford to become indifferent to threats to the rule of law among its members.
Hosted between a handful of NATO allies, U.S. nuclear arms in Europe have been in place for decades.
Both countries share land borders with Kim Jong Un's secretive state.
This could add a huge chunk to the national deficit.
A new report showed Yemen's Iran-friendly Houthi movement evaded the U.S. anti-missile system protecting troops from North Korea.
Flynn's family said it has received an "outpouring" of support following his charge in the Mueller probe.
Investigators are examining whether he used position to aid nuclear power plant projects in Middle East.
The next campaigns will be waged against the heroes of the revolutionary struggle.
Germany, France and 21 other European states have voted to plan their defenses together and avoid wasteful spending.
Lithuania's defense minister said NATO states "need to address" permanent anti-aircraft power across the Baltic states and Poland to counter Russia.
As Russia consolidates its position in Syria and the Middle East as a whole, it's reaching out to rivals and selling them a coveted weapon, the S-400.
The combat drills are underway during a tense time for the Korean Peninsula.
Russia's foreign minister said the U.S. only attacked Iraq after being "100 percent" sure it had no weapons of mass destruction and therefore wouldn't attack North Korea.
The future of Poland's position in the European Union remains uncertain.