UPDATE 1300 GMT: At least 54 people were killed and 150 injured in the Kabul explosion, according to the Ministry of Health. Four people died and 21 were injured in the Mazar-e Sharif bomb.
UPDATE 1000 GMT: A senior police officer has said more than 40 people have been killed and more than 100 wounded in the Kabul bombing.
UPDATE 0830 GMT: A bomb has exploded at a Shi'a mosque in central Kabul as worshippers commemorated the religious occasion of Ashura. Journalist Jerome Starkey reported, "Dozens dead. Bodies all over the street." An AFP photographer also counted more than 30 dead.
Another attack has been reported in Mazar-e Sharif in northern Afghanistan.
Ten years after the fall of the Taliban in Afghanistan --- and ten years after the first Bonn Conference on the country's future --- Afghan leaders and foreign representatives have again convened in Germany. I spoke with BBC West Midlands last night about the conference, the prospects for progress, the absence of the Taliban from the discussion, and the possible motives for Afghan President Hamid Karzai's subsequent visit to London.
The item starts just before the 1:10.00 mark.