A suicide bomber detonated an explosive device in the Qala Bakhtiar neighborhood of Kabul, Afghanistan, on Monday, killing six people, including a woman, and injuring 13 others. The attack, which took place in the southwestern outskirts of the city, is under investigation with no immediate claim of responsibility. The Islamic State group remains active in the country and has carried out similar attacks in the past. Meanwhile, President Joe Biden and Vice President Kamala Harris made their first joint campaign appearance in Pittsburgh on Labor Day, following Biden's exit from the presidential race and Harris becoming the Democratic nominee. Their campaign trail aims to boost support in key battleground states like Pennsylvania and Michigan, with Harris focusing on working-class voters and union members. The duo's efforts are also being influenced by ongoing international concerns, including the situation in the Middle East and U.S. hostage negotiations.