May says 'enough is enough' after London attackers kill seven

By Estelle Shirbon and William JamesLONDON (Reuters) - British Prime Minister Theresa May called on Sunday for a stronger response to Islamist extremism after three attackers rammed a hired van into pedestrians on London Bridge and stabbed others nearby, killing seven people and injuring 48.The attack occurred five days before a parliamentary election and was the third to hit Britain in less than three months."It is time to say enough is enough," the Conservative leader said outside her Downing