World News in Brief: Insecurity in the Darfurs, 100 million live with landmine threats, Singapore execution moratorium More than 10 people were reportedly killed, and many others injured, in a drone strike on Tuesday in the town of Um Dukhun in Central Darfur state, according to local sources.  “We strongly condemn this, and all attacks against civilians and civilian infrastructure,” Mr. Dujarric  told  journalists in New York.  Meanwhile, insecurity forced some 115 people to flee their homes in a village in the Kutum locality, North Darfur state, last Sunday.  They have sought refuge in the regional capital, El Fasher, according to the International Organization for Migration ( IOM ).  Childhood vaccination campaign   Despite the many challenges, the UN and partners continue to respond to needs across Sudan, where the brutal civil war has entered a fourth year.  UN health agency WHO is midway through a six-day…