Richard called on Conrad to join him on campaign, but he refused, citing Richard's alliance with King Guy. He too had been negotiating with Saladin as a defence against any attempt by Richard to wrest Tyre from him for Guy. However, in April, Richard was forced to accept Conrad as king of Jerusalem after an election by the nobles of the kingdom. Guy had received no votes at all; Richard sold him Cyprus as compensation. Before he could be crowned, Conrad was stabbed to death by two Hashshashin in the streets of Tyre. Eight days later, Richard's nephew Henry II of Champagne married Queen Isabella, who was pregnant with Conrad's child. It was strongly suspected that the king's killers had acted on instructions from Richard.