The United States on Monday announced new G7 sanctions targeting Russia's defense industry in a bid to hobble the Kremlin's ability to maintain the military machine during its operation in Ukraine.

(From C, clockwise) Germany's Chancellor Olaf Scholz, US President Joe Biden, Britain's Prime Minister Boris Johnson, Japan's Prime Minister Fumio Kishida, European Commission President Ursula von der Leyen, European Council President Charles Michel, Italy's Prime Minister Mario Draghi, Canada's Prime Minister Justin Trudeau and France's President Emmanuel Macron have taken seat at a round table as Ukraine's President Volodymyr Zelensky addresses G7 leaders. (Photo: AFP)

"G7 leaders will align and expand targeted sanctions to further restrict Russia's access" to Western technology that can support the Russian arms industry, the White House said.

And the US will also "aggressively target Russian defence supply chains... and limit Russia's ability to replace the military equipment it has already lost during its brutal war".