A senior US general has called for an investigation into allegations that American weapons are falling into the hands of al-Qaeda in Yemen. The head of Central Command, General Joseph Votel, raised the concerns before a Senate committee.

The general's call follows a number of reports that have accused Saudi Arabia and the UAE of transferring weapons to armed groups in Yemen.

Pieter Wezeman, senior researcher at the Stockholm International Peace Research Institute, talks to Al Jazeera about the allegations.

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