Campy Chorus Shifter
There's this horizontal pin on the brake lever next to the hoods. It's meant to open the brakes for easier wheel changes as Campy brakes don't have release levers on the calipers. It seems be in the 'released' position. Pull the lever and push the pin from the side that's sticking out. See if it resolves your problem.
If yours brake pads are already very close to the rims you will probably have to adjust the cable.