President François Hollande said on Thursday that Islamist groups holding French hostages in Africa were not trustworthy and should not be taken seriously after Al-Qaeda accused Paris of blocking negotiations for their release. There are a total of nine French hostages on the continent. On Tuesday the Al-Qaeda in Islamic Maghreb (AQIM) said France was snubbing talks proposed by the group to free four French citizens abducted in Niger in September 2010. "The less one speaks, the better one can work," Hollande told journalists during a visit to Rungis, a giant wholesale food market just outside Paris. "There have been...