For many policymakers, economic sanctions have become the tool of choice to respond to major geopolitical challenges such as terrorism and conflict.

Relations between the two countries, long bound by common interests in oil and security, have strained over what some analysts see as a more assertive Saudi foreign policy.

Charges of foreign power interference in the U.S. presidential election have raised grave national security concerns and touched off multiple federal inquiries that could drag on for months.

President Trump’s decision to recognize Jerusalem as Israel’s capital and relocate the embassy there could set back the Israeli-Palestinian peace process.

One of the world’s most-watched news networks is at the center of a geopolitical rift between a Saudi-led bloc and the broadcaster’s funder, Qatar.