At least a dozen people have been killed in three separate US - led drone strikes in different parts of Afghanistan.One of the airstrikes took place in southeastern Wardak province on Friday night, killing seven people. Wardak provincial spokesman Attaullah Khogyani said all the victims were Taliban militants. In the second incident, two people lost their lives in an airstrike in the southern Afghan province of Kandahar. The US military has confirmed the deaths. Three people were also killed in another US-led drone attack in the southeastern province of Paktia. The airstrikes carried out by US-led foreign forces in Afghanistan have been on the rise in recent years. On September 26, five people died in a US-led airstrike in Saidabad District of Wardak. On September 25, reports said that a US-led drone strike in the country’s northern province of Kunduz killed Chardara district's shadow governor. The United States says the airstrikes target members of the Taliban militant group. However, reports on the ground show many civilians have fallen victim to the attacks. The United Nations says the US-operated drone strikes pose a growing challenge to the international rule of law.