The heinous attack on Israel by Hamas this month sent shockwaves throughout the Middle East and across the world. War in one part of the world has a ripple effect — we all feel its impact. In this case, the United States is especially affected. Hamas killed American citizens in its assaults on innocent people across Israel. It is holding American citizens hostage underground in Gaza. Hamas has American blood on its hands.

The United States and Israel have always been bound by shared values and strategic interests. We are now further bound by shared tragedy. This is why our government must act...