Iraq and Afghanistan we know, but "Yemen" is a word many of us haven't heard since high school geography class.

But there is a war there, and America is definitely involved.

Just last week, a human rights watchdog reported that a single airstrike in Yemen in March killed nearly 100 innocent civilians, some 25 of them children. The strike was conducted by Saudi Arabia, but it was done with American-supplied weapons and positioning technology.

Shortly before that, we learned of a murderous raid on a hospice for the elderly founded by Mother Teresa herself, an attack which left 16 people dead, including four nuns who managed the facility. The incident was an "act of senseless and diabolical violence," said Vatican Secretary of State Pietro Parolin, and Pope Francis "prays that this pointless slaughter will awaken consciences, lead to a change of heart and inspire all parties to lay down their arms and take up the path of dialogue."

One way to further that goal—while strengthening American security—is stop the flow of U.S. support to the Saudi Arabian side of Yemen's conflict.