Joe Biden and Vladimir Putin meeting in 2001: the Russian president finally congratulated the US president-elect on his election victory on December 15.
EPA-EFE/Maxim Shipenkov
Calls to keep talking are getting louder out of fear of escalation and ultimately war – but why are diplomatic relations so difficult for Nato and Russia?
A Turkish military convoy in Idlib, northern Syria.
Yahya Nemah/EPA
Turkey is a NATO member but that doesn't mean its NATO allies will come to its support in Syria.
German Chancellor Angela Merkel speaks with Russian President Vladimir Putin during the International Libya Conference in Berlin, Germany, 19 January 2020.
EPA/ALEXEI NIKOLSKY/SPUTNIK/KREMLIN
Klaus W. Larres, University of North Carolina at Chapel Hill
President Trump's speech about Iran wasn't just aimed at that country or the US. He also targeted NATO allies, urging members of the alliance to step up and help US efforts in the Middle East.
U.S. President Donald Trump was flanked by military officers as he responded to the ballistic missile strike that Iran launched against Iraqi air bases housing U.S. troops.
AP Photo/Evan Vucci
Iran's missile strikes on Iraqi bases in response to the killing of Iranian general Qassem Soleimani have raised tensions between the U.S. and Iran. But war seems unlikely at this point.
“Still not funny Mr President?”
OLIVIER HOSLET/EPA
The US president, Donald Trump, has arrived in the UK for a summit of NATO leaders – but it's awkward timing for the British prime minister, Boris Johnson.
French President Emmanuel Macron, left, and U.S. President Donald Trump meet the press at the 2019 NATO summit in London.
AP Photo/ Evan Vucci
As the North Atlantic Treaty Organization celebrates its 70th anniversary with a leaders' meeting in London, five US scholars shed light on NATO's history and its potential future.
The EU and NATO: aligned but not always together.
Nedelcu Paul Petru/Shutterstock
Since the 1940s, Congress has largely let the president make decisions, while members of the House and Senate endorse or condemn those actions from the sidelines.
An alliance at odds: NATO secretary-general, Jens Stoltenberg, met the Turkish foreign minister, Mevlut Cavusoglu, in Istanbul.
Tolga Bozoglu/EPA
The fallout for President Trump from his conversation with Ukrainian President Zelenskiy was swift and harsh. The consequences for Zelenskiy and his country could also be serious.
Death in detention: the aftermath of an airstrike on the Tajoura camp in Tripoli in July 2019.
EPA
Turkey's authoritarian leader, Recep Tayyip Erdoğan, was handed a big defeat recently when his party's candidate lost a crucial election contest. Is this the beginning of Erdogan's demise?
A man surveys the wreckage after a NATO strike misses its target and hits an apartment block in 1999.
EPA
Professor at the School of International Service and Visiting Senior Fellow, Council on Foreign Relations, American University School of International Service