Tillerson, Russia's Lavrov both in Africa, but don't meet

ADDIS ABABA, Ethiopia (AP) — They could have run into each other sipping coffee in the lobby, perhaps at the bar at Ethiopia's finest hotel. But U.S. Secretary of State Rex Tillerson and Russian Foreign Minister Sergey Lavrov didn't meet, and now both countries are trading accusations about who's to blame.

The top American and Russian diplomats warily circled each other in Africa, where both are paying official visits this week. As their two countries trade accusations over Syria, Ukraine and even the Oscars, their governments are trolling each other with barbs on social media.