Here's an excerpt from the BBC news site,
Fifteen Royal Navy personnel captured at gunpoint by Iranian forces had sailed into Iran's waters illegally, its government has insisted.
Tehran had made a "firm protest" about the "illegal entry" in the Gulf by the UK personnel, an Iranian official said.
The UK maintains the eight sailors and seven marines had been carrying out routine duties in Iraqi waters.
The personnel, who are thought to be unharmed, were seized at 1030 local time after boarding a boat in the Gulf.