A magnitude 6.3 earthquake struck northern Afghanistan overnight Sunday into Monday, the US Geological Survey (USGS) said, two months after a tremor in the impoverished nation’s east killed over 2,200 people. Seven people were killed and 150 injured in the quake, the local health directorate said on Monday. The USGS issued an orange alert in its PAGER system, which is an automated system that produces information on the impact of earthquakes, and indicated that “significant casualties are likely...