Volunteers work at the site of a building that collapsed after an earthquake in Mandalay, central Myanmar, Saturday, March 29, 2025. (AP Photo/Thein Zaw) MANDALAY, MYANMAR — A unilateral partial ceasefire to facilitate earthquake relief efforts was announced on Saturday by Myanmar’s shadow National Unity Government, which coordinates the popular struggle against the ruling military. The country’s death toll from the disaster soared to 1,644. The figure was a sharp rise compared to the 1,002 announced just hours earlier, highlighting the difficulty of confirming casualties over a widespread region and the likelihood that the numbers will continue to grow from…