The Russian invasion of Ukraine has lasted over a month, with millions of people being forced to flee their home as airstrikes rain down amid fighting on the streets.
Vladimir Putin has refused to pull back his troops, while Ukraine leader Volodymyr Zelenskyy has constantly said that there will be no surrenders from his army in defence of their cities.
There have been issues on the eastern half of Europe for a long time, with the 2014 annexation of Crimea being a major flashpoint.