The anti-whaling activist Paul Watson has been held by Danish authorities in Greenland since July. Japan accuses him of injuring fishermen and damaging a vessel during a whale hunt in 2010. Tokyo is demanding Watson's extradition so he can face charges, with a court in Denmark expected to rule this Wednesday. Japan is one of only a few countries that hunt whales for commercial gain – a practice it says is an important part of its culture. FRANCE 24's Makiko Kobayashi, Alexis Bregere, Justin McCurry and Mélodie Sforza report.