Iran imprisoned Nazanin Zaghari-Ratcliffe and Anoosheh Ashoori as hostages to get the UK to pay the UKP 400 million that it owned to Iran.

That money was a refund of the price of an arms sale that the UK cancelled. It was right for the UK to pay that money, but not acceptable for Iran to take innocent people hostage to get it. Foreigners thinking of visiting Iran should beware, for they too may be taken hostage for years.