Russia warned of ‘unprecedented sanctions’ over Ukraine as world leaders talk

Members of Ukraine’s Territorial Defence Forces (Efrem Lukatsky/AP)

Russia has been warned it will be swiftly hit with an “unprecedented package of sanctions” in the event of a fresh incursion in Ukraine after Boris Johnson joined Joe Biden and world leaders to present a united front to combat a feared invasion.

The British prime minister and the US President met virtually with the leaders of Nato, the EU, Italy, Poland, France and Germany on Monday evening as they hoped to avert what Mr Johnson warned would be a bloody and protracted conflict for Moscow.