During the morning, new talks began between Ukraine and Russia.
In addition, representatives of China and the United States will meet for talks for the first time after Russia's invasion.
The leading European stock exchanges interpreted the new development of events as positive with clear price increases as an effect.
In Stockholm, the rise was sufficient to recapture the entire race that began in connection with the Russian major invasion.
The large-cap index OMXS30 increased 1.2 percent.
The forest group SCA did best, up 3.4 percent.
The paper manufacturer Essity and the white goods giant Electrolux, up 3.2 and 3.1 percent, respectively, also did strongly during the first trading day of the week.
Clothing giant H&M, which on Tuesday presents new sales figures, rose 1.2 percent.
26 of 30 shares on the large companies list went up on Monday.
Among those who lost were the online casino company Evolution, down 5.1 percent, and the mining giant Boliden, down 2.5 percent.
Boliden has risen sharply recently in rising base metal prices.
Outside the heavyweight list, a falling oil price meant, among other things, that Lundin Energy fell 5.0 percent.
The construction company JM went in the opposite direction, which rose 5.8 percent after the share received a buy recommendation in Dagens industri.
The Paris Stock Exchange's CAC40 index rose 1.8 percent and the London Stock Exchange's FTSE100 index rose 0.6 percent.
The Frankfurt Stock Exchange's DAX index had increased by 2.3 percent by 18 o'clock.