Wars on abstract concepts (e.g. terror, freethinking) are dangerous because they can be aimed at virtually anyone and can be invoked to launch every missile and curtail every freedom.
Islamist militant group Boko Haram releases photos apparently showing a rocket-making factory in north-eastern Nigeria.
Siegfried O. Wolf, a professor of political science at the South Asia Institute of the University of Heidelberg, said that foreign intelligence agencies did withhold sensitive information from Bangladesh, fearing that it could be misused. The country is in the grip of extreme political polarization, he said, and there is factionalism and rivalry among security agencies.
Australia's tour of Bangladesh appears increasingly in danger of being cancelled, with Cricket Australia's security team on their way home to brief players and the board following a series of meetings in Bangladesh over the past two days.
A top Islamist militant who ordered a deadly attack on an Algerian gas plant two years ago has been killed in a US air strike in Libya, officials say.