Hundreds of troops are storming a café in the Bangladeshi capital Dhaka, where gunmen took at least 20 hostages on Friday, security officials say. "Intense gunfighting (is) on," Mizanur Rahman Bhuiyan, of the Rapid Action Battalion force told Reuters. Explosions were also heard in the area. Reports say several of those held are Italian, and some may be Japanese. The fate of the hostages is unknown. The militant group Islamic State (IS) had said it carried out the attack.......