MALIAN authorities have sought an international arrest warrant for the son of ousted President Ibrahim Boubacar Keita, two legal sources in Mali have said, in a case linked to the disappearance of a journalist in 2016. Interpol, which declined to comment, can issue a so-called red notice on behalf of member countries that asks police worldwide to locate and provisionally arrest a wanted person for extradition, surrender or similar legal action. A source at a court in Bamako with direct knowledge of the case and a source at the Court of Appeal said the authorities had asked for an international…