premise: The government will decide on how to implement the mid-term and long-term plans to net the members of the militant groups, who are scattered across the country.
  Around 400 JMB cadres have been arrested from different parts of the country since August-17 country-wide bomb blasts. The law enforcers, however, have failed to arrest the masterminds of the bombing.
  Praful C Patel, vice president of World Bank, the main development partner of Bangladesh, recently advised the government of Bangladesh to nab the bomb attackers at any cost. If the government fails to arrest them, the WB reportedly will not come up with necessary assistance for the development projects.
   Why was it hard for the government to catch the militant groups?
hypothesis: come up with necessary assistance for the development projects