Omar rose to become head of the Taliban, before his base in Kandahar fell during the US-led invasion. Since then his whereabouts have been a mystery.
More than half the countries in the world are currently generating Islamist extremist fighters for groups such as Al-qaeda and Isis, the UN has said.
Prime minister Sushil Koirala has said earthquake fatalities could more than double to 10 000, another blow to one of Asia's poorest countries.
The Taliban is under pressure to prove itself as groups splinter off and the army moves in.
Twelve women died after they were forced into attending a state-run sterilisation camp in India.
Organisers of the Indian Super League are hoping to convert cricket crazy Indians to the joys of football.
News analysis: US interest in the Afghanistan region is now waning, but various extremist factions will remain.
A successful visit to Pakistan by new Indian prime minister Narendra Modi could unlock a cascade of beneficial consequences for both nations.
Election surveys show the supremacy of India's greatest political dynasty is at an end.
Opinion polls have put opposition BJP party head Narendra Modi far ahead of the Gandhi-led Congress party.