Complex sentence: Politicians and NGOs proceeded to remind the IWG-TIP of its unfulfilled mandate for the eight years following 2004, and the IWG-TIP continued to promise to establish such a plan.
Split into simpler sentences: Politicians and NGOs proceeded to remind the IWG-TIP of its unfulfilled mandate for the eight years following 2004. The IWG-TIP continued to promise to establish such a plan.