Early in the morning on Thursday, February 24, Russia launched a military invasion by order of President Vladimir Putin.
The attacks were carried out in several places in eastern Ukraine and on Friday troops had entered the capital Kyiv.
Russia recognized the cities of Donetsk and Luhansk as independent, and the invasion progressed rapidly.
At the same time as mass refugees began from Ukraine, all men between the ages of 18 and 60 were forced to stay to defend their country.
Ukrainian President Volodymyr Zelenskyj also called on Ukrainian civilians to arm themselves.
Three days into the war, Prime Minister Magdalena Andersson said that Sweden will contribute military equipment.
900 civilians have lost their lives
More than 3.5 million people have fled Ukraine.
More than 2 million have come to Poland, just over half a million to Romania and hundreds of thousands to Moldova, Hungary, Slovakia and Russia.
So far, almost twenty thousand have come to Sweden.
Every second, a child is forced to flee Ukraine, according to Unicef.
Since the outbreak of the war, the EU and Western countries have responded with extensive sanctions against Russia.
US President Joe Biden states that NATO has never been more united.
More than 900 civilians lost their lives during the first month of the war, according to the UN, which points out that the real figure is probably higher.