G7 foreign ministers will attempt to agree a common position on the Syrian conflict, before the US secretary of state flies to Russia to try to persuade it to abandon its Syrian ally.
Roseline Ebhoramen reports that, Rex Tillerson will also meet officials from allied Middle Eastern countries before heading to Moscow.
The UK has suggested threatening tightly-focused sanctions on Russian and Syrian military officers. The moves follow the latest apparent use of chemical weapons in Syria.
President Trump and UK Prime Minister May said during a phone call that it was no longer in Russia’s strategic interest to support President Assad.
German Chancellor Angela Merkel meanwhile agreed with President Trump that President Assad should be held accountable.
However Washington’s Syria policy remains unclear to many, with Mr. Tillerson saying that there had been no change to their military posture in Syria following the US airbase strike and that Washington’s “first priority” was to defeat Islamic State
In a sign of the tensions between the US and Russia, the Kremlin has said that Mr. Tillerson will not meet President Vladimir Putin.
UK Foreign Secretary Boris Johnson said sanctions could target high-ranking Syrians and Russians who had been involved in coordinating Syrian military operations.
These would be the first sanctions against Russian figures over Syria if they were to be adopted.
Russia is already subject to a raft of sanctions imposed by the US and EU in response to the annexation of Crimea and the crisis in eastern Ukraine.