It has been building up since the 2013 Maidan protests in Kiev, sparked by Ukraine’s decision not to go ahead and sign an “association agreement” with the EU.
Instead it veered toward Russia, which temporarily was a relief to Moscow, but the protests exploded into violence and eventually President Viktor Yanukovych fled.
A new government was imposed and shortly after, in 2014, Russia invaded Crimea, which is part of Ukraine, and has continued to be occupied.
