(Al Jazeera English News Headlines: April 21, 2010) Planes are flying again in European airspace as the cloud of volcanic ash from an Icelandic volcano disperses. Thai anti-government "red shirt" protestors have blocked a train carrying soldiers and ammunition to the capital Bangkok. Indians demonstrated in New Delhi in protest of high food prices. China is holding a day of national mourning for the over two thousand killed in last week’s earthquake. The rescue efforts of Tibetan monks unappreciated by the Chinese government. Governments in the Sahara desert region are making plans for collective security in the face of rising violence from al-Qaeda.