The Senate Intelligence Committee has released to the public 13 videos showing victims of last month’s alleged chemical attacks in Syria.

The videos detail what appears to be victims of the chemical attacks convulsing and foaming at the mouth. It includes graphic images of children who were apparently victims of the attack, which the U.S. says was carried out by the regime of Syrian President Bashar Assad and left 1,400 dead.

They also show the dead bodies of adults, children and the elderly lying side by side on the floor. The victims have no signs of blood or other wounds.

The release of the videos appears to be part of a major effort by the Obama administration and those in Congress who back a strike to convince the public of the need for a military response.