Ukraine claims to control over 1,000sq km (386sq miles) of Russian territory since a surprise offensive began August 6.
Israel has hit more than 500 Gaza schools in the past 10 months. Al Jazeera breaks down the deadliest attacks.
More than 400 people have been arrested across the UK following a week of race riots and vandalism.
Thirteen countries have been banned from the Olympics in the past. Which are they, and why were they barred?