The answer to the question “What’s the longest river in the world?” might sound simple—find the source, the mouth, and measure—but in between those steps are strange definitions ...

Thalweg is a German word meaning the way of the valley. It's essentially the deepest navigable channel. So in order to give both countries equal access to navigation on the river, you draw a line ...

01 March 2014 BAGHDAD: The long-disputed Thalweg river line between Iraq and Iran returned to life by a new later-to-be-signed agreement between the two sides.. In a statement by Iraqi foreign ...