The geopolitical world order is being remade under President Trump, but not necessarily in the way he intends. This series takes a region-by-region look at US foreign policy and asks: What does the decline of US power and influence mean for the world?

The past, present, and future of US-EU sanctions and their impact on the Russian economy.

Ankara and Moscow have found a common cause in the Syrian civil war, but geopolitical disagreements in the South Caucuses and beyond will thwart too close of a détente.

The Saudi and Egypt-led blockade of Qatar has been a long time coming.

President Erdogan’s long-sought constitutional changes have passed by the narrowest of margins. What comes next for Turkey?

Trump’s attack on Syria sets the United States on a dangerous course while raising questions about who’s really in charge in Washington.

An apparent chemical attack by the Assad government has thrown a wrench into President Trump’s plans to wind down the Syrian civil war.

The United States’ reluctant and largely invisible secretary of state made no apparent progress in his stop in Turkey.

King Abdullah’s position isn’t as secure as some Western leaders might assume.

An ambitious new force expansion and U.S. and Russian deployments in Kurdish-held territory all suggest that Turkey’s Euphrates Shield is not marginalizing the YPG.