2 US troops killed in eastern Afghanistan

The Pentagon says two US service members were killed in Afghanistan.
Navy Capt Jeff Davis says they were killed overnight yesterday during an operation against the Afghanistan-based Islamic State group in Nangahar Province in the eastern part of the country. He says the US is gathering further details.
The US has been battling the Islamic State Khorasan group in Afghanistan for months. About two weeks ago, the US dropped what's called the "mother of all bombs" on an IS complex in Nangahar Province, just days after a US Army special forces soldier was killed in the region.
The bomb is the largest non-nuclear weapon ever used in combat by the US, and killed several dozen militants.

The US estimates that the group has about 800 fighters in Afghanistan.