Security around Colombian President Alvaro Uribe has been tightened after rebels issued an order for his assassination. Intelligence services have intercepted guerrilla communications calling all units to focus on murdering Mr Uribe. Rebel group Farc has intensified its efforts to kill Mr Uribe, who is seeking to change the constitution so he can be re-elected. Mr Uribe has led a US-backed campaign to crack down on the country’s militia.Full Story