
A U.S. submarine sank a warship with a torpedo off the southern coast of Sri Lanka, dramatically widening Washington's pursuit of the Iranian navy.

Experts say Tehran will likely try to inflict collateral damage in neighbouring countries and exhaust U.S. and Israeli defences by using cheap kamikaze drones in order to try and save the regime.

Jessica McClain was ahead by a wide margin with about 2.4 kilometres left to go at the U.S. half marathon championships when she and three other runners followed a guide vehicle on a wrong turn, leading them off-course for about one kilometre.

After a year of upheaval, departures and shifting priorities at some of the U.S. agencies charged with keeping the U.S. safe, experts say the U.S. may be more vulnerable to a terror attack. The conflict with Iran also comes as hundreds of Homeland Security personnel are not being paid or have been furloughed because of the government shutdown.