GUWAHATI, April 29 ? Nalbari district, a strong bastion of the proscribed United Liberation Front of Asom (ULFA), is today under siege of the Army, police and para-military forces engaged in counter-insurgency operation. Deputy Commissioner of Nalbari, B Kalyan Chakraborty, who heads the Unified Command at district level by virture of his official position, informed that over 20 hardcore ULFA militants had been ?eliminated? in the district in ?encounters? with security forces in the last couple of months. The Deputy Commissioner attributed the success of ?well-coordinated? Army-police...