Ukrainian President Zelensky visits combat positions at the frontline with Russia Photograph:( AFP )
President Biden during a virtual summit with President Putin had threatened to impose sanctions if Russia attacked Ukraine.
Ahead of the G7 foreign ministers meet, UK's foreign minister Liz Truss said Russia would be committing a "strategic mistake" if it attacked Ukraine.
Truss said there would be "severe consequences if anything were to happen" referring to Russia's reported plan to attack Ukraine which has been dominated the European agenda in the past month.
The UK foreign minister also expressed concern over the Nordstream 2 natural gas pipeline project.
"Nordstream 2 is very important," Truss said, adding, "moving ahead with that in the case of this aggression that we're seeing by Russia with respect to Ukraine would be a problem."
Watch: President Biden reaffirms support for Ukraine in call with Zelenskyy
President Biden during a virtual summit with President Putin had threatened sanctions if Russia attacked Ukraine with the UK foreign minister retreating that trade ties with London would be hit if the Ukraine situation went out of control.
President Biden had spoken to Germany's new chancellor Olaf Scholz on the tensions between Ukraine and Russia.
"We need to come together strongly to stand up to aggressors who are seeking to limit the bounds of freedom and democracy," Truss said.
India, South Korea, Australia and South Africa are set to participate as guests during the G7 summit.
Russia had said earlier that NATO should not allow Georgia and Ukraine into its military alliance and desist from expanding near its border in the east.
"In the fundamental interests of European security, it is necessary to officially disavow the decision of the 2008 NATO Bucharest summit that 'Ukraine and Georgia will become NATO members," the Russian foreign ministry said.
(With inputs from Agencies)