The European Union helped to build more than 30 miles of water pipelines for Palestinians despite Hamas terrorists boasting of their ability to forge an arsenal of home-made rockets from pipes.

Brussels has poured almost €100 million into pipeline projects in territories controlled by the Islamist group over the last decade, a Telegraph analysis of the bloc’s foreign aid found.

The revelation comes amid a mounting international row over future handouts to Gaza amid fears humanitarian donations could fall into the hands of Hamas.