“These security guarantees are often treated by nuclear weapon states as conditional political statements rather than permanent, legally binding obligations,” said Mr Persbo.
“The people are afraid of you, bloggers are afraid of you, artists are afraid of you, governors are afraid of you. And you are the president of our country,” said the blogger.
China supports all efforts to achieve peace in the Ukraine crisis, a foreign ministry spokesperson said on Tuesday.
Mr Merz said the conflict was likely to conclude only when one side is either militarily or economically exhausted.
U.S. Special Envoy Steve Witkoff and U.S. President Donald Trump’s son-in-law, Jared Kushner, also took part in the talks on ending the war in Ukraine.
Mr Putin insisted that Moscow be the venue for negotiations, as he had proposed during his visit to China earlier this week.
Mr Trump had lashed out at the Russian leader over drone and missile attacks on Ukraine that killed at least 12 people and left scores injured.
Direct talks between the Ukrainian and Russian envoys will begin at 12:30 p.m. (0930 GMT).
The negotiation had already started, Al Arabiya broadcaster reported earlier.
Mr Trump said land and power plants would be part of his conversation with the Russian leader.
