The US wars in the Middle East and North Africa following the September 11 attacks have killed at least 4.5 million people and displaced millions of others.

New York City authorities on Monday were investigating a possible "maintenance issue" with a door that failed to close when fire erupted in a Bronx apartment building a day earlier, killing 19 people, including nine children.

“Afghanistan, for example, has the highest number of verified child casualties since 2005, at more than 28,500.”