Number of Iraqis in need of aid has crossed 8 million, according to the global body.
Secretary-General Ban Ki-moon calls on Islamabad to bring perpetrators to justice.
Ananta Bijoy Das used to write for focus on science and evolution, but also wrote a few blogs criticizing aspects of Islam and Hinduism.
Foreign minister says NATO needs to tackle grassroots of terrorism in addition to airstrikes on militants.
Salahuddin Ahmed says he has no idea how he wound up in neighboring country after being abducted from his home two months ago.
Spokesman says Islamabad had no prior knowledge of the 2011 operation that led to Al Qaeda leader’s death.