Diplomacy and International Politics

US President Donald Trump has appointed Richard Grenell, US ambassador to Germany, as acting director of national intelligence. It's a sensitive post overseeing 17 US spy agencies and has traditionally been filled by an intelligence professional. The World's Marco Werman speaks with Cathryn Clüver Ashbrook at the Harvard Kennedy School.

Testimony before the House Foreign Affairs Subcommittee on Europe, Eurasia, Energy, and the Environment. Testimony by: Amanda Sloat, Robert Bosch Senior Fellow, Brookings Institution

Nicholas Burns, former US Ambassador to NATO and Greece, says American foreign policy has been "turned on its head" this week. How could national security be impacted by an impeachment inquiry of President Trump?

Former U.S. Secretary of State Rex Tillerson offered his take on global leaders and hotspots, from Iran and Saudi Arabia to North Korea and Syria. He was joined by Professor Nicholas Burns, Professor James Sebenius and Professor Robert Mnookin.

Unlike the Iraq war of 2003 when Europe was split in its support of the US, all of Europe now disagrees with the American approach to Iran. If the US were to use military force, there would be no European support and the sad likelihood of unifying Europe on an anti-American basis.

Just two weeks ago, a tweet cost the global stock markets roughly $1.36 trillion (or Australia’s annual GDP). With 280 characters on Twitter, the U.S. President Donald Trump threatened to raise tariffs on select Chinese imports, instilling lower market confidence, triggering significant volatility, and exacerbating existing political uncertainties. To explore what is really at stake in Twitter diplomacy, it is important to explore why Twitter diplomacy matters, why world leaders use it, what it means for diplomatic relations, and how governments can manage the associated risks.