Arab and Muslim nations have given the least assistance to Afghanistan among international donors, Finance Minister Ashraf Ghani said on Monday, while expressing hope they would "rise to the challenge." "I hope that our Arab brothers will help us substantially. We have not seen any major contribution from our Arab brothers," Ghani told a press conference at which European Commission representative Karl Harbo signed over a new 79.5-million-euro (100-million-dollar) aid package. "I think it deserves emphasis that the least amount of assistance is coming from Muslim countries to this country which has been at the forefront of freeing the world...