Complex sentence: In 2000 Mbangu welcomed the implementation of UN Security Council Resolution 1325 which increased the involvement of women in UN peace and security missions; she had seen at first hand how blockages in access to services had impacted on women in refugee camps.
Split into simpler sentences: In 2000 Mbangu welcomed the implementation of UN Security Council Resolution 1325 to increase the involvement of women in UN peace and security missions. Having seen first hand the impact of blockages in access to services had had on women in refugee camps.