(Dallas, Texas) — Yesterday, the horrific attack in London underscored yet again the threat radical Islamic terrorism poses to our allies. We mourn for those murdered, killed and traumatized, and we pray for the Lord to comfort and heal.

The attack on our British ally was also a stark reminder that such terror could strike inside the U.S. homeland without warning if our leaders do not aggressively improve defensive measures to protect the American people, and launch far more aggressive offensive measures to decisively defeat the Islamic State and other militant Islamist groups.

UPDATE: ISIS has just claimed responsibility for the attack. “The perpetrator of the attacks yesterday in front of the British parliament in London is an Islamic State soldier and he carried out the operation in response to calls to target citizens of the coalition,” says the Amaq news agency, the ISIS press channel.

In this context…