We must innovate to get ahead of entrepreneurial terrorists

"Enough is enough." So said British Prime Minister Theresa May after Saturday's attack in central London.

The murder of seven people by three terrorists was a watershed moment. If May wins in tomorrow's general election, she promises decisive action to protect the public.

The urgency is justified. Some analysts suggest jihadist activity in Britain has risen to the level of an insurgency. Whatever the truth of that, no democracy can long tolerate intimidation of its citizens by a death cult.

Yet British terrorism is a global problem, not merely a national one. The Islamic State's murder entrepreneurialism is worldwide. It is America's chief national security challenge. In Orlando and Manchester, in San Bernardino and Brussels, in Paris and Kabul, and in so many other locales, we have learned that the enemy's appetite for mayhem and murder has no geographic limit.

Neither May's resolve nor the solidarity of the West is sufficient on its own. The evolving terrorist threat requires an evolving response. Just as the Islamic State innovates in order to kill us, so must we innovate to thwart it and destroy it. Congress, the military and the entire U.S. national security establishment must respond with speed and force.