Russia must honour Ukraine deal, says US secretary of state

US secretary of state Rex Tillerson has said Russia must abide by a 2015 deal aimed at ending fighting between Ukrainian forces and Russia-backed separatists.

The former Exxon Mobil chief executive spoke after meeting Russian foreign minister Sergey Lavrov for the first time in the highest level face-to-face contact between representatives from the two countries since Donald Trump took office on January 20.