HALO calls for greater effort to secure global weapons and ammunition Format Last Wednesday, HALO had the honour of addressing the UN, making the case for greater focus on addressing insecure and unsafe arms across the globe. HALO is a leader in this field, providing expert assistance to fragile and conflict-affected states. But success of these efforts will depend on increased international support, and greater priority being given to illicit weapons by states affected by them. The explosion of nearly 3,000 tonnes of ammonium nitrate in Beirut in late 2020 devastated the city. This incident sharpened focus on the importance of effective weapons and ammunition management. HALO programmes around the globe had national authorities knocking on their doors, asking for help with their ageing stockpiles.