A poorly-controlled border and frosty relations between Afghanistan and Pakistan have allowed Al-Qaeda and insurgent groups to increase their activity in the region, a top thinktank said Tuesday. A lack of a cohesive strategy by NATO forces and insufficient troop numbers in Afghanistan have also let insurgent groups move into previously quiet areas of the country, the International Institute for Strategic Studies (IISS) said. Elsewhere the thinktank noted a "surge" in terrorist attacks in India including November's massacre in Mumbai, and a growing radicalisation of a minority of Indian Muslims.