G7 leaders have expressed "serious concern" over Russia's announcement that it could ship nuclear-laden missiles to Belarus, the DPA reported.

In a joint statement on the second day of a three-day summit in the Bavarian Alps, the leaders of Britain, Canada, France, Germany, Italy, Japan and the United States condemned "the unjustified use of nuclear rhetoric and signaling by Russia."

"Russia must abide by its international obligations, including those prohibiting the use of chemical, biological or nuclear weapons," the statement said.

"We urge Russia to act responsibly and show restraint, and reiterate that any use of such weapons would be unacceptable and would have grave consequences," the G7 leaders said in a joint statement issued by the DPA.

The comments came after President Vladimir Putin reportedly told Belarussian leader Alexander Lukashenko, his closest ally in the war against Ukraine, that Russia would deliver missiles capable of carrying nuclear warheads to Belarus in the next few months, the DPA reported. i