Ukrainian authorities blame Russia for the assassination of former parliament speaker Andriy Parubiy, a prominent figure in pro-European protests. A suspect has been arrested in Lviv. Meanwhile, Kharkiv's schoolchildren are starting the year in underground bomb shelters, as Russia continues its attacks. Around 17,000 children attend seven such underground schools in Kharkiv, a testament to the ongoing conflict's impact on daily life.

Prepared by Rachel Morgan and reviewed by editorial team.