Ukraine has raised the alarm over an increase in Russian forces near its eastern border as violence has risen along the line of contact separating its troops from Russia-backed separatists in its Donbass region.
"The Chancellor demanded that this build-up be unwound in order to de-escalate the situation," Germany's government said in a readout of a telephone call between Merkel and Putin.
The legislation, which could pave the way for Putin to stay in power until 2036 should he choose to do so and win re-election, reflects sweeping changes to the constitution that were brought in last year.
"Vaccination, of course, is a voluntary decision for every person. It is every person's personal decision," Putin said at a televised government meeting on Monday about Russian vaccines against COVID-19. "By the way I plan to do this tomorrow."
"Today we can say confidently -- and practice indisputably confirms -- that Russian vaccines are absolutely reliable and safe," he said. "No other similar foreign drugs have shown such a high level of protection."