The detention of the top Taliban negotiator looks to have stalled hopes to reignite the peace process.
Halfway through the world's biggest election, the nationalist opposition looks set to win a narrow majority.
The arrest of the top Taliban leader threatens Kabul's efforts to jump start the peace process.
Incident raises fears as to the capacity of security forces to maintain stability after international troops withdraw.
Bomb was hidden in box of fruit and detonated amid morning traffic.
Action aimed at sending message to Pyongyang and Beijing.
A bomb has targeted the convoy route of Pervez Musharraf within minutes of him passing, police say.
Relations between the two countries continue to suffer after the arrest of a junior Indian diplomat.
Polling is being held in 91 seats in 14 states, including in the capital Delhi and the key state of Uttar Pradesh.
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