Sporadic clashes reported in several provinces in Afghanistan as both sides give conflicting death tollsAfghanistan has said it had thwarted Pakistan’s attempted airstrikes on Bagram airbase, the former US military base north of Kabul, as cross-border fighting between the two countries stretched into a fourth day.Months of clashes have flared up again since Thursday, when Afghanistan launched attacks along the frontier and Pakistani forces hit back on the border and from the skies. Pakistan has...